[{"data":1,"prerenderedAt":1521},["ShallowReactive",2],{"blog-\u002Fblog\u002Frunning-training-guide":3,"blog-related-candidates":1341},{"id":4,"title":5,"author":6,"body":7,"category":1317,"date":1318,"dateModified":1318,"description":1319,"extension":1320,"featured":1321,"image":1322,"imageHeight":1323,"imageWidth":1324,"meta":1325,"navigation":1326,"path":1327,"qa":1328,"seo":1331,"sitemap":1332,"stem":1333,"tags":1334,"__hash__":1340},"blog\u002Fblog\u002Frunning-training-guide.md","Running Training Guide: Every Run Has a Job","Runima Team",{"type":8,"value":9,"toc":1283},"minimark",[10,24,27,30,35,65,71,81,85,90,98,101,113,117,120,123,136,140,143,146,150,266,270,279,288,301,305,322,343,347,361,364,368,371,377,381,389,395,399,410,419,436,446,455,468,472,475,547,581,589,593,611,614,617,621,636,662,666,669,686,692,707,711,715,726,741,745,760,763,767,770,773,777,789,798,802,811,814,817,821,861,867,871,968,971,975,1278],[11,12,15],"callout",{"color":13,"icon":14},"primary","i-ph-path",[16,17,18,19,23],"p",{},"The first time a runner tries to train seriously, the menu can feel absurdly large. Zone 2. LSD. Tempo. Threshold. Fartlek. VO",[20,21,22],"sub",{},"2","max. 30-30s. Hill sprints. Double threshold. Strength. Plyometrics. Altitude. Heat. The useful truth is simpler: these are not competing identities. They are tools. The skill is knowing which tool your body is ready to use, and which one it does not need yet.",[16,25,26],{},"An easy run that feels almost too easy is not a failed workout. A short hill sprint is not the same thing as an interval session. Lactate is not poison. And the impressive training week posted by an elite athlete is usually a terrible place for a newer runner to start.",[16,28,29],{},"This guide connects every major training type to the job it does, the evidence behind it, and the runner it is for. If you are building your first 5K, the answer is deliberately short. If you are chasing a marathon, a faster 10K, or a lifetime of running after 40, the same foundations remain, with more layers added carefully.",[31,32,34],"h2",{"id":33},"start-with-the-one-pattern-almost-everyone-gets-wrong","Start with the one pattern almost everyone gets wrong",[16,36,37,38,42,43,46,47,50,51,58,59,64],{},"Across elite endurance sports, the training log has a recognizable shape: roughly ",[39,40,41],"strong",{},"75-85% of volume is low intensity",", with the remaining 15-20% at threshold and above. Researchers call the most extreme version ",[39,44,45],{},"polarized",": lots of work below the first threshold, some clearly above the second, and little in between. A ",[39,48,49],{},"pyramidal"," week keeps the easy base but contains more controlled middle-intensity work. Both can work; the durable common ground is that the majority must be genuinely easy (",[52,53,57],"a",{"href":54,"rel":55},"https:\u002F\u002Fpubmed.ncbi.nlm.nih.gov\u002F16430681\u002F",[56],"nofollow","Seiler & Kjerland, 2006","; ",[52,60,63],{"href":61,"rel":62},"https:\u002F\u002Fdoi.org\u002F10.3390\u002Fsports12120326",[56],"Nøst, Aune & van den Tillaar, 2024",").",[16,66,67,68,70],{},"That is not an instruction to turn every beginner into an 80\u002F20 accountant. It is a warning about the default mistake: turning every run into a little race. Moderate running is not useless, but when it fills every day it is too hard to recover from freely and too unfocused to replace a real threshold or VO",[20,69,22],{},"max session. The result is the familiar gray zone: always tired, rarely fast, and unable to explain what any run was meant to do.",[72,73,75],"note",{"icon":74},"i-ph-chat-circle",[16,76,77,80],{},[39,78,79],{},"The first test is conversational speech."," On an easy day, you should be able to speak in full sentences. If you cannot, slow down, walk briefly, or use a flatter route. Easy effort is a physiological target, not a pace you have to defend.",[31,82,84],{"id":83},"the-foundation-easy-running-and-the-long-run","The foundation: easy running and the long run",[86,87,89],"h3",{"id":88},"easy-zone-2-running-the-work-you-can-recover-from","Easy \u002F Zone 2 running: the work you can recover from",[16,91,92,93,97],{},"Easy running sits below the first ventilatory or lactate threshold, often near or below ~2 mmol\u002FL lactate and roughly 65-79% of maximum heart rate. The exact number varies too much between people for a watch default to settle the question. Use the talk test, easy breathing, and your own tested thresholds where possible. Our ",[52,94,96],{"href":95},"\u002Fblog\u002Fheart-rate-zones","heart-rate zones guide"," explains why generic percentage formulas are only a starting point.",[16,99,100],{},"Easy running drives substantial physiological adaptation. Repeated low-intensity contractions activate AMPK and p38 MAPK, which converge on PGC-1alpha, a major regulator of mitochondrial biogenesis. PGC-1alpha then helps direct the machinery that makes mitochondria: NRF-1, NRF-2, and mitochondrial transcription factor A. Over time, that means more oxidative enzymes, denser capillary networks, better fat oxidation, a larger blood volume, and a heart that pumps more blood with each beat. These adaptations accumulate even at low intensity.",[16,102,103,104,106,107,112],{},"Those adaptations explain why volume and intensity are complements, not substitutes. VO",[20,105,22],{},"max is principally limited by oxygen delivery, especially maximal cardiac output; training raises it largely through stroke volume rather than a higher maximum heart rate (",[52,108,111],{"href":109,"rel":110},"https:\u002F\u002Fpubmed.ncbi.nlm.nih.gov\u002F10688280\u002F",[56],"Bassett & Howley, 2000","). Easy volume helps build that delivery system while leaving enough freshness for faster training later.",[86,114,116],{"id":115},"long-slow-distance-easy-but-long-enough-to-matter-differently","Long slow distance: easy, but long enough to matter differently",[16,118,119],{},"Long slow distance, or LSD, is not a separate magic zone. It is easy running extended in time. The longer exposure adds practice at fuel management, fat oxidation, glycogen sparing, and maintaining efficient form when the legs are tired. It also gives tendons, ligaments, bone, and muscle repeated submaximal loading. Ernst van Aaken made an almost-all-LSD philosophy famous; modern training has kept the long run but gives it a place alongside controlled intensity.",[16,121,122],{},"For a new runner, a long run may initially be only 10 minutes longer than the other runs. For a marathoner, it becomes the race-specific anchor. In both cases, fitness usually improves faster than connective tissue. That mismatch is why a runner can feel aerobically ready for a big jump that their Achilles, shin, or bone is not ready to absorb.",[124,125,127],"caution",{"icon":126},"i-ph-warning-octagon",[16,128,129,130,135],{},"Avoid heroic single-run jumps. In the 5,205-runner Garmin-RUNSAFE cohort, sessions more than 10% longer than a runner's longest run in the previous 30 days were associated with higher overuse-injury risk; more than doubling it had a hazard ratio of 2.28 (",[52,131,134],{"href":132,"rel":133},"https:\u002F\u002Fpubmed.ncbi.nlm.nih.gov\u002F40623829\u002F",[56],"Frandsen et al., 2025","). This is observational evidence, not a precise safety law, but it supports gradual progression far better than bravado.",[86,137,139],{"id":138},"recovery-runs-a-run-that-does-not-need-to-prove-anything","Recovery runs: a run that does not need to prove anything",[16,141,142],{},"A recovery run is slower and easier still, well below Zone 2 for many runners. It maintains routine and circulation with very little added stress. It can help clear lactate because lactate is a usable fuel, not metabolic waste, but its real value is strategic: it lets hard days remain hard and easy days remain easy. Kenyan runners' easy days are famously close to a trot for this reason.",[16,144,145],{},"If a recovery run makes you more tired, it is not recovery. Walk, take a rest day, or choose non-impact movement instead.",[31,147,149],{"id":148},"the-quality-tools-each-one-solves-a-different-problem","The quality tools: each one solves a different problem",[151,152,153,172],"table",{},[154,155,156],"thead",{},[157,158,159,163,166,169],"tr",{},[160,161,162],"th",{},"Training type",[160,164,165],{},"What it feels like",[160,167,168],{},"Primary job",[160,170,171],{},"Best first use",[173,174,175,190,210,224,238,252],"tbody",{},[157,176,177,181,184,187],{},[178,179,180],"td",{},"Threshold \u002F tempo",[178,182,183],{},"Comfortably hard, controlled",[178,185,186],{},"Raise the pace you can sustain before lactate accumulates",[178,188,189],{},"One weekly session after an aerobic base",[157,191,192,198,201,207],{},[178,193,194,195,197],{},"VO",[20,196,22],{},"max intervals",[178,199,200],{},"Hard, repeatable 3-5 minute efforts",[178,202,203,204,206],{},"Raise aerobic power and time near VO",[20,205,22],{},"max",[178,208,209],{},"Intermediate runners with consistent volume",[157,211,212,215,218,221],{},[178,213,214],{},"HIIT \u002F sprint intervals",[178,216,217],{},"Very hard or all-out, short efforts",[178,219,220],{},"Time-efficient mitochondrial and anaerobic stimulus",[178,222,223],{},"Sparingly, with full recovery",[157,225,226,229,232,235],{},[178,227,228],{},"Fartlek",[178,230,231],{},"Surges by feel",[178,233,234],{},"Flexible speed, terrain, pace changes",[178,236,237],{},"A low-pressure introduction to faster running",[157,239,240,243,246,249],{},[178,241,242],{},"Hill repeats \u002F hill sprints",[178,244,245],{},"Powerful uphill running",[178,247,248],{},"Force, economy, recruitment with less braking",[178,250,251],{},"Strides-to-speed bridge for many runners",[157,253,254,257,260,263],{},[178,255,256],{},"Strides \u002F repetitions",[178,258,259],{},"Fast, relaxed, full recovery",[178,261,262],{},"Coordination, speed, economy",[178,264,265],{},"Safe early speed exposure after easy runs",[86,267,269],{"id":268},"tempo-and-threshold-moving-the-redline","Tempo and threshold: moving the redline",[16,271,272,273,275,276,64],{},"Threshold running is the controlled work near the highest effort you can sustain without a progressive rise in lactate. It is often described as “comfortably hard.” For many runners that is near an hour-race effort, but the familiar 4 mmol\u002FL label is only a population shorthand, not a universal threshold. Well-trained athletes reach this point at a much higher fraction of VO",[20,274,22],{},"max than untrained people (",[52,277,111],{"href":109,"rel":278},[56],[16,280,281,282,287],{},"The key idea changed when George Brooks' lactate-shuttle research showed that lactate is fuel and a signal. It moves from more glycolytic fibers, which are rich in MCT4 transporters, toward oxidative fibers, the heart, brain, liver, and mitochondria, where MCT1 helps take it up and oxidize it. Endurance training increases MCT1 in muscle and mitochondrial membranes (",[52,283,286],{"href":284,"rel":285},"https:\u002F\u002Fpubmed.ncbi.nlm.nih.gov\u002F10984266\u002F",[56],"Dubouchaud et al., 2000","). Threshold work therefore helps a runner sustain a faster pace before production outpaces clearance.",[16,289,290,291,295,296,300],{},"Practical formats are a 20-minute continuous tempo, or cruise intervals such as 4 x 6 minutes with short jog recoveries. The purpose is accumulation, not survival. For a detailed way to locate and train these boundaries, read ",[52,292,294],{"href":293},"\u002Fblog\u002Flactate-threshold","Lactate Threshold: Your Hidden Redline"," and ",[52,297,299],{"href":298},"\u002Fblog\u002Ftraining-lactate-thresholds","Train LT1 by Heart Rate, LT2 by Pace",".",[86,302,304],{"id":303},"vo2max-intervals-raising-the-ceiling","VO2max intervals: raising the ceiling",[16,306,194,307,309,310,312,313,318,319,321],{},[20,308,22],{},"max intervals are usually 3-5 minute repetitions near the speed associated with VO",[20,311,22],{},"max, with recoveries that allow good repeats. They stress central delivery, including stroke volume and maximal cardiac output, as well as peripheral mitochondrial and capillary adaptations. Véronique Billat's work made ",[39,314,315,316,206],{},"vVO",[20,317,22],{}," (the velocity at VO",[20,320,22],{},"max) and the time one can sustain it useful practical reference points.",[16,323,324,325,327,328,330,331,333,334,339,340,342],{},"Her 30-30 session alternates 30 seconds near vVO",[20,326,22],{},"max with 30 seconds at an easy float, allowing more accumulated time near maximum oxygen uptake than a continuous effort. In one four-week study, combining vVO",[20,329,22],{},"max intervals with tempo and easy running improved vVO",[20,332,22],{},"max by about 3% and running economy by about 6% (",[52,335,338],{"href":336,"rel":337},"https:\u002F\u002Fpubmed.ncbi.nlm.nih.gov\u002F10027018\u002F",[56],"Billat et al., 1999","). Protocol matters: a 2025 comparison found traditional longer intervals could produce more time above 90% VO",[20,341,22],{},"max than intensified short intervals. Faster-looking is not automatically a better dose.",[86,344,346],{"id":345},"hiit-and-sprint-interval-training-powerful-not-mandatory","HIIT and sprint interval training: powerful, not mandatory",[16,348,349,350,58,355,360],{},"HIIT repeats hard efforts, commonly above 90% HRmax, with recovery. Sprint interval training (SIT) is harder again: near-maximal or all-out short efforts. Both can generate endurance-like molecular signals in surprisingly little time. Brief intense exercise activates AMPK and p38 MAPK and increases PGC-1alpha expression; after repeated HIIT sessions, PGC-1alpha protein content rises in human muscle (",[52,351,354],{"href":352,"rel":353},"https:\u002F\u002Fpubmed.ncbi.nlm.nih.gov\u002F19589955\u002F",[56],"Gibala et al., 2009",[52,356,359],{"href":357,"rel":358},"https:\u002F\u002Fpubmed.ncbi.nlm.nih.gov\u002F21415110\u002F",[56],"Little et al., 2011","). Full recruitment of Type II fibers also helps explain why SIT can trigger oxidative adaptations alongside anaerobic power.",[16,362,363],{},"That does not mean a time-crunched beginner should run all-out. The cost is high, technique can unravel, and already highly trained athletes may show a smaller molecular response because their baseline adaptations are higher. Treat HIIT and SIT as sharp tools, not replacements for the mileage that builds durable running capacity.",[86,365,367],{"id":366},"fartlek-structure-without-staring-at-a-watch","Fartlek: structure without staring at a watch",[16,369,370],{},"Fartlek means “speed play” in Swedish. It blends easy running with surges decided by terrain, landmarks, or feel: to the next tree, up this hill, 60 seconds on and two minutes easy. A Kenyan Thursday fartlek may be group running with serious intent; for another runner it can be the first enjoyable encounter with changing pace.",[16,372,373,374,376],{},"Because its surges can range from threshold to VO",[20,375,22],{},"max, fartlek trains pace changes and lactate handling without the psychological weight of exact splits. It is especially useful when terrain, weather, or a new runner's changing fitness make rigid pace targets misleading.",[86,378,380],{"id":379},"hills-resistance-training-in-disguise","Hills: resistance training in disguise",[16,382,383,384,64],{},"Uphill running asks for more force and neuromuscular recruitment while reducing the braking and impact forces of maximal sprinting on flat ground. Hill repeats can build power, leg stiffness, and running economy; Barnes and colleagues tested several uphill interval approaches for exactly these outcomes (",[52,385,388],{"href":386,"rel":387},"https:\u002F\u002Fpubmed.ncbi.nlm.nih.gov\u002F23200173\u002F",[56],"Barnes et al., 2013",[16,390,391,392,394],{},"Short hill sprints of around 8-10 seconds, with complete walking recovery, are a useful low-volume bridge between easy running and fast work. Keep them smooth, not desperate. Longer hill repeats become an aerobic or VO",[20,393,22],{},"max workout depending on grade and duration.",[31,396,398],{"id":397},"strength-plyometrics-and-the-economy-you-cannot-see-on-a-watch","Strength, plyometrics, and the economy you cannot see on a watch",[16,400,401,402,404,405,64],{},"Running economy is the oxygen and energy cost of a submaximal speed. Two people can have the same VO",[20,403,22],{},"max and need very different amounts of energy to run 5:00\u002Fkm. Economy reflects metabolism, cardiorespiratory function, mechanics, coordination, limb mass, arm swing, vertical movement, and how effectively tendons return elastic energy (",[52,406,409],{"href":407,"rel":408},"https:\u002F\u002Fpmc.ncbi.nlm.nih.gov\u002Farticles\u002FPMC4555089\u002F",[56],"Barnes & Kilding, 2015",[16,411,412,413,418],{},"This is where strength work earns its place. Heavy resistance methods produce small but significant improvements in economy (effect size -0.266), and combined strength-plus-plyometric methods show moderate improvements (-0.426) across a range of running speeds (",[52,414,417],{"href":415,"rel":416},"https:\u002F\u002Fdoi.org\u002F10.1007\u002Fs40279-023-01978-y",[56],"Llanos-Lagos et al., 2024","). The payoff is usually neural and elastic rather than a large increase in muscle size: better motor-unit recruitment, rate of force development, and leg\u002Ftendon stiffness.",[16,420,421,422,427,428,430,431,64],{},"Plyometrics use the stretch-shortening cycle: a fast eccentric load stores energy in a tendon, then a quick concentric action returns it. Six weeks of plyometrics improved economy, 3K performance, and musculotendinous stiffness in trained runners (",[52,423,426],{"href":424,"rel":425},"https:\u002F\u002Fpubmed.ncbi.nlm.nih.gov\u002F12840638\u002F",[56],"Spurrs, Murphy & Watsford, 2003","). In another intervention, three plyometric sessions a week improved economy by about 2.3% without changing VO",[20,429,22],{},"max. Achilles stiffness can increase after depth-jump training even when maximal strength does not (",[52,432,435],{"href":433,"rel":434},"https:\u002F\u002Fpubmed.ncbi.nlm.nih.gov\u002F17196652\u002F",[56],"Kubo et al., 2007",[437,438,440],"tip",{"icon":439},"i-ph-barbell",[16,441,442,445],{},[39,443,444],{},"A practical starting point:"," two non-consecutive strength sessions each week, built around squats or split squats, hinges, calf raises, and single-leg work. Add low-amplitude hops or skips only after you tolerate strength and running well. Heavy lower-body lifting and high-amplitude plyometrics can depress running economy for hours; leave at least 48-72 hours between hard plyometric sessions.",[16,447,448,449,454],{},"The old concern is the “interference effect”: endurance work may blunt strength and hypertrophy gains, first described by Hickson. It is real under some conditions, and running creates more interference than cycling, likely because of eccentric damage (",[52,450,453],{"href":451,"rel":452},"https:\u002F\u002Fpubmed.ncbi.nlm.nih.gov\u002F22002517\u002F",[56],"Wilson et al., 2012","). But for a distance runner, the relevant outcome is better running economy, and modern reviews find the interference effect smaller or absent when sequencing and recovery are sensible. AMPK activity from endurance work largely returns to baseline in about three hours while mTORC1 signaling from lifting lasts much longer, so separating key sessions by at least three hours is a sensible minimum rather than a rigid rule.",[16,456,457,458,58,463,64],{},"Tendons adapt more slowly than muscle. Bone responds best to high strain magnitude and rate, which is why sprinting and jumping can be more osteogenic than endless easy mileage. Distance running builds bone at loaded sites, but it does not guarantee excellent hip or spine density, particularly when energy availability is low. Master sprinters have shown 10-14% higher hip bone density than endurance runners and controls; adolescent female sprinters have also shown higher spine and total-body bone mineral density than endurance runners (",[52,459,462],{"href":460,"rel":461},"https:\u002F\u002Fpmc.ncbi.nlm.nih.gov\u002Farticles\u002FPMC5188477\u002F",[56],"Ito et al., 2016",[52,464,467],{"href":465,"rel":466},"https:\u002F\u002Fpubmed.ncbi.nlm.nih.gov\u002F30015273\u002F",[56],"Piasecki et al., 2018",[31,469,471],{"id":470},"how-to-arrange-the-tools-into-a-week","How to arrange the tools into a week",[16,473,474],{},"The right week is not the most elaborate one. It is the most you can repeat, recover from, and slowly progress.",[151,476,477,490],{},[154,478,479],{},[157,480,481,484,487],{},[160,482,483],{},"Runner",[160,485,486],{},"The week that usually makes sense",[160,488,489],{},"What to leave out for now",[173,491,492,503,519,533],{},[157,493,494,497,500],{},[178,495,496],{},"New runner",[178,498,499],{},"3 easy run-walk or easy runs, 2 strength sessions",[178,501,502],{},"Structured intervals, double thresholds, maximal sprints",[157,504,505,508,516],{},[178,506,507],{},"Consistent recreational runner",[178,509,510,511,515],{},"Easy majority, gradual long run, strides or hill sprints, 1 threshold ",[512,513,514],"em",{},"or"," interval day",[178,517,518],{},"Two hard sessions if recovery is poor",[157,520,521,524,530],{},[178,522,523],{},"Intermediate racer",[178,525,526,527,529],{},"Easy majority, long run, 1 threshold day, 1 VO",[20,528,22],{},"max\u002Fhill\u002Ffartlek day, strength 2x",[178,531,532],{},"Adding intensity because a workout felt good",[157,534,535,538,544],{},[178,536,537],{},"Advanced high-volume runner",[178,539,540,541,543],{},"A periodized mix of threshold, VO",[20,542,22],{},"max, economy work, and recovery",[178,545,546],{},"Copying elite volume or lactate targets without adaptation",[16,548,549,550,553,554,557,558,561,562,565,566,569,570,572,573,575,576,580],{},"Jack Daniels' practical vocabulary remains useful: ",[39,551,552],{},"E","asy, ",[39,555,556],{},"M","arathon, ",[39,559,560],{},"T","hreshold, ",[39,563,564],{},"I","nterval, and ",[39,567,568],{},"R","epetition. His broad targets are E at ~59-74% VO",[20,571,22],{},"max \u002F ~65-79% HRmax, M at ~75-84%, T at ~83-88%, I at ~95-100%, and R at roughly ~105-115% of VO",[20,574,22],{},"max. He advises keeping I-volume below about 8% of weekly mileage. See ",[52,577,579],{"href":578},"\u002Fblog\u002Ftraining-paces","Training Paces: Science and Calculation"," for the pace framework.",[16,582,583,584,64],{},"Daniels also made 180 steps per minute famous after informally timing runners at the 1984 Olympics. It was a floor among elite racers at speed, not a universal cadence prescription. A more defensible intervention is increasing your own cadence by roughly 5-10% if you overstride: that can reduce impact loading by around 10-20% without increasing oxygen cost (",[52,585,588],{"href":586,"rel":587},"https:\u002F\u002Fpubmed.ncbi.nlm.nih.gov\u002F20581720\u002F",[56],"Heiderscheit et al., 2011",[86,590,592],{"id":591},"polarized-pyramidal-and-norwegian-labels-are-not-plans","Polarized, pyramidal, and Norwegian: labels are not plans",[16,594,595,596,598,599,601,602,58,607,64],{},"Polarized training emphasizes easy work plus clearly hard work, with little time between thresholds. Pyramidal training has an easy base, more threshold work, and less high intensity. Pyramidal distributions are common in marathon base periods; polarized models are prominent in many elite endurance programs. A 2013 study found polarized training improved recreational runners' 10K performance more than a between-thresholds emphasis, and a 2024 systematic review of 14 studies found it effective for VO",[20,597,22],{},"max, VO",[20,600,22],{},"peak, and work economy, while explicitly warning that the study pool is limited (",[52,603,606],{"href":604,"rel":605},"https:\u002F\u002Fpubmed.ncbi.nlm.nih.gov\u002F24152012\u002F",[56],"Muñoz et al., 2014",[52,608,610],{"href":61,"rel":609},[56],"Nøst et al., 2024",[16,612,613],{},"The Norwegian double-threshold method is the most misunderstood version of this conversation. Popularized by the Ingebrigtsen brothers and developed in part by former Norwegian 5,000 m record-holder Marius Bakken, it places two carefully controlled sub-threshold interval sessions on one day, often twice per week. Athletes use lactate meters to stay below LT2 \u002F maximal lactate steady state, commonly around 3.5-4.5 mmol\u002FL, then retain a huge low-intensity base. A typical day might be 5 x 6 minutes in the morning and 400-1,000 m intervals in the afternoon, with one separate harder “X-element” session each week.",[16,615,616],{},"Its point is not to see how much pain someone can tolerate. It is to accumulate a great deal of controlled threshold work without piling up excessive fatigue. It is also designed for exceptionally well-adapted runners doing high volume. At 30-60 km per week, most runners will gain more from easy volume, a single controlled quality session, strength, and sleep than from trying to imitate an elite's lactate schedule.",[86,618,620],{"id":619},"periodization-and-tapering-when-less-work-makes-you-faster","Periodization and tapering: when less work makes you faster",[16,622,623,624,627,628,631,632,635],{},"Training needs a changing emphasis over months. ",[39,625,626],{},"Linear periodization"," moves from high-volume, lower-intensity base work toward lower-volume, more race-specific intensity. ",[39,629,630],{},"Block periodization"," concentrates a limited set of adaptations for a period, such as a high-intensity block. ",[39,633,634],{},"Undulating periodization"," varies stress within the week, as in the Norwegian model. None removes the need for recovery; they simply decide where the emphasis goes.",[16,637,638,639,642,643,646,647,652,653,655,656,661],{},"The final phase is the taper. A meta-analysis of 27 studies found the strongest performance outcome from a ",[39,640,641],{},"two-week taper"," that exponentially reduced volume by ",[39,644,645],{},"41-60%"," while maintaining intensity and frequency (",[52,648,651],{"href":649,"rel":650},"https:\u002F\u002Fpubmed.ncbi.nlm.nih.gov\u002F17762369\u002F",[56],"Bosquet et al., 2007","). A 2023 meta-analysis confirmed improvements in time-trial and time-to-exhaustion performance, especially with 8-14 day tapers, though not necessarily VO",[20,654,22],{},"max or running economy (",[52,657,660],{"href":658,"rel":659},"https:\u002F\u002Fpmc.ncbi.nlm.nih.gov\u002Farticles\u002FPMC10171681\u002F",[56],"Wang et al., 2023","). The taper works because fitness is revealed when fatigue falls. It is not a two-week holiday.",[31,663,665],{"id":664},"cross-training-altitude-and-heat-useful-amplifiers-not-prerequisites","Cross-training, altitude, and heat: useful amplifiers, not prerequisites",[16,667,668],{},"Cycling, swimming, aqua jogging, and the elliptical can maintain or add aerobic work with less impact. They are especially valuable during injury rehabilitation, for masters runners, and when a running program is near its mechanical limit. Cycling generally causes less concurrent-training interference than running, and swimming less still. The limitation is specificity: cross-training is cardiovascular help, not a full substitute for the tissue adaptations of running.",[16,670,671,674,675,680,681,64],{},[39,672,673],{},"Live high, train low"," (LHTL) is the classic altitude model: live around 2,500 m for the hypoxic signal, train nearer 1,250 m to preserve high-quality sessions. In Levine and Stray-Gundersen's original college-runner study, the LHTL group improved 5,000 m performance by 13.4 ± 10 seconds alongside about a 9% rise in red-cell mass; other conditions did not (",[52,676,679],{"href":677,"rel":678},"https:\u002F\u002Fpubmed.ncbi.nlm.nih.gov\u002F9216951\u002F",[56],"Levine & Stray-Gundersen, 1997","). Twenty-four days around 2,456 m increased hemoglobin mass by ~5.3% and red-cell volume by ~5% in another study (",[52,682,685],{"href":683,"rel":684},"https:\u002F\u002Fpubmed.ncbi.nlm.nih.gov\u002F16469934\u002F",[56],"Wehrlin et al., 2006",[16,687,688,689,691],{},"Those are compelling results, not a guarantee. Athletes generally need more than 12 hours a day in hypoxia, individual response is large, VO",[20,690,22],{},"max falls roughly 6-8% per 1,000 m in elite athletes, and some direct studies have not replicated meaningful hemoglobin-mass changes. Altitude is an expensive, individual experiment, not a shortcut.",[16,693,694,695,700,701,706],{},"Heat acclimation is more accessible. Within days, repeated heat exposure expands plasma volume by roughly 4-15% (reported range 3-27%), lowers heart rate and body temperature at a given workload, increases stroke volume, starts sweating earlier, and produces more dilute sweat (",[52,696,699],{"href":697,"rel":698},"https:\u002F\u002Fpubmed.ncbi.nlm.nih.gov\u002F25689930\u002F",[56],"Périard, Racinais & Sawka, 2015","). Emerging evidence suggests longer protocols may also raise hemoglobin mass modestly, perhaps ~3% over 5.5 weeks, after plasma expansion prompts an erythropoietic response (",[52,702,705],{"href":703,"rel":704},"https:\u002F\u002Fpmc.ncbi.nlm.nih.gov\u002Farticles\u002FPMC6419359\u002F",[56],"Mikkelsen et al., 2019","). Prepare for a hot race because it will be hot; any general aerobic bonus is secondary.",[31,708,710],{"id":709},"your-body-changes-the-dosage","Your body changes the dosage",[86,712,714],{"id":713},"beginners-the-biggest-gains-and-the-slowest-tissues","Beginners: the biggest gains and the slowest tissues",[16,716,717,718,720,721,725],{},"New runners can improve VO",[20,719,22],{},"max by 15-20% or more, and mitochondrial and capillary changes come quickly. That is encouraging, but it creates a trap: aerobic fitness can improve faster than tendons and bone adapt. Spend 8-12 weeks on mostly easy running or run-walking, strides, and basic strength before structured intervals. ",[52,722,724],{"href":723},"\u002Fblog\u002Fhow-to-start-running","How to Start Running"," has progression templates that make this intentionally conservative stage manageable.",[16,727,728,729,734,735,740],{},"The old acute:chronic workload ratio (the last 7 days divided by a rolling 28-day average) proposed a sweet spot of roughly 0.8-1.3 and danger above 1.5 (",[52,730,733],{"href":731,"rel":732},"https:\u002F\u002Fpubmed.ncbi.nlm.nih.gov\u002F26758673\u002F",[56],"Gabbett, 2016","). Its broader principle holds: build chronic capacity gradually and avoid spikes. Its exact ratio thresholds do not. Mathematical coupling has led major methodological criticism, and recent running data did not support a week-to-week ratio effect (",[52,736,739],{"href":737,"rel":738},"https:\u002F\u002Fpmc.ncbi.nlm.nih.gov\u002Farticles\u002FPMC8138569\u002F",[56],"Impellizzeri et al., 2021","). Track trends and unusually long individual runs instead of treating one ratio as a traffic light.",[86,742,744],{"id":743},"masters-runners-keep-some-intensity-earn-more-recovery","Masters runners: keep some intensity, earn more recovery",[16,746,747,748,750,751,756,757,759],{},"Age changes the recovery budget, not the value of training. In an eight-year study, master endurance athletes around age 62 who kept training lost VO",[20,749,22],{},"max at about 5.5% per decade, versus about 12% per decade in sedentary men (",[52,752,755],{"href":753,"rel":754},"https:\u002F\u002Fpubmed.ncbi.nlm.nih.gov\u002F2347785\u002F",[56],"Rogers et al., 1990","). In masters athletes, changes in training volume explain a large share of observed VO",[20,758,22],{},"max decline, while training cessation can cause rapid loss. Sarcopenia after 50, roughly 3.7-4.7% muscle mass per decade, makes strength training especially important.",[16,761,762],{},"The message is not “train like you are 25.” Keep some faster running and strength work, but give it room: longer warm-ups, more recovery between hard sessions, and a low threshold for backing off when sleep, mood, resting heart rate, or performance turns persistently worse.",[86,764,766],{"id":765},"youth-protect-growth-preserve-the-fun","Youth: protect growth, preserve the fun",[16,768,769],{},"Young runners can participate in distance running with few known adverse effects, but research is sparse, particularly below age 10, and growth plates are more vulnerable during puberty. Guidance is conservative: World Athletics suggests no more than three runs a week under 14 and runs\u002Fraces up to 10 km weekly for ages 12-14; the American Academy of Pediatrics recommends at least one rest day and 2-3 months away from a single sport each year. The National Athletic Trainers' Association recommends limiting vigorous activity to 16-20 hours per week.",[16,771,772],{},"The better long-term program is multisport, playful, and multidirectional. Sprinting, jumping, and supervised strength training are not things to fear; poor supervision and poor technique, not appropriate resistance training itself, are the primary safety problems.",[86,774,776],{"id":775},"female-runners-fuel-is-training","Female runners: fuel is training",[16,778,779,780,782,783,788],{},"Women have similar running economy and fractional utilization to men, on average, but tend to show a greater proportional area of Type I fibers, better fat oxidation and carbohydrate sparing, more even pacing, and greater fatigue resistance in endurance exercise. Lower hemoglobin concentration, lower absolute VO",[20,781,22],{},"max and muscle mass, and higher body fat mean men remain faster on average, though the gap narrows in ultra-endurance events (",[52,784,787],{"href":785,"rel":786},"https:\u002F\u002Fpmc.ncbi.nlm.nih.gov\u002Farticles\u002FPMC8764368\u002F",[56],"Hallam & Amorim, 2022","). Sex-specific exercise science remains underpowered because male participants have historically dominated the literature.",[16,790,791,792,797],{},"The urgent practical difference is bone health and energy availability. Relative Energy Deficiency in Sport (RED-S) and the Female Athlete Triad link low energy availability, menstrual dysfunction, and low bone mineral density. Amenorrhea, low BMD, and multiple Triad risk factors are each associated with substantially higher stress-fracture risk; high Triad-risk female runners had a 4.40 incidence-rate ratio for trabecular-rich bone stress injuries in one 2023 study (",[52,793,796],{"href":794,"rel":795},"https:\u002F\u002Fpubmed.ncbi.nlm.nih.gov\u002F36913142\u002F",[56],"Kraus et al., 2023","). Missing periods, recurrent bone stress injuries, or chronic under-fueling are not signs that training is working. They warrant clinical and sports-dietitian support.",[31,799,801],{"id":800},"a-few-physiological-truths-that-change-how-you-train","A few physiological truths that change how you train",[16,803,804,805,810],{},"Muscle-fiber genetics influence potential, but they do not write the whole story. Elite distance runners have historically shown high Type I fiber proportions: one classic study reported 79.0 ± 3.5% slow-twitch fibers in elite male runners' gastrocnemius, compared with 61.8 ± 2.9% in good runners and 57.7 ± 2.5% in untrained men (",[52,806,809],{"href":807,"rel":808},"https:\u002F\u002Fpubmed.ncbi.nlm.nih.gov\u002F922019\u002F",[56],"Fink, Costill & Pollock, 1977","). Yet runners with nearly identical 2:18 marathon performances have been reported with 50% and 98% slow-twitch fibers. Training reliably shifts Type IIx fibers toward more oxidative Type IIa behavior, while a wholesale Type II-to-Type I conversion remains contested.",[16,812,813],{},"All major endurance work eventually points toward the same molecular pathway: calcium signaling, AMPK, p38 MAPK, SIRT1, and reactive oxygen species converge on PGC-1alpha, which helps build mitochondria. Easy running, threshold work, HIIT, and sprint intervals differ most in dose, fiber recruitment, fatigue, and recoverability. They are different ways to stimulate related endurance adaptations.",[16,815,816],{},"Fatigue is not one thing either. Peripheral fatigue comes from within muscle: depleted phosphocreatine and glycogen, impaired calcium handling, and metabolite accumulation. Central fatigue includes reduced neural drive and brain-level changes involving neurotransmitters and immune signals. Ultras have more central-fatigue contribution; short maximal efforts are more peripheral. The brain is not “giving up” in a moral sense. It is regulating output against the body state it detects.",[31,818,820],{"id":819},"the-minimum-effective-plan-from-here","The minimum effective plan, from here",[822,823,824,831,837,843,849,855],"ol",{},[825,826,827,830],"li",{},[39,828,829],{},"Make easy running the default."," Aim for a real low-intensity majority, not an impressive average pace.",[825,832,833,836],{},[39,834,835],{},"Build time and long-run tolerance gradually."," Do not let cardiovascular fitness rush tendons and bone.",[825,838,839,842],{},[39,840,841],{},"Add strength twice a week."," It supports economy, force production, tendon health, and healthy aging.",[825,844,845,848],{},[39,846,847],{},"Add speed in layers."," Start with strides or hill sprints, then one controlled threshold, fartlek, or interval session when your base is stable.",[825,850,851,854],{},[39,852,853],{},"Choose only one new stressor at a time."," More volume, a longer long run, harder intervals, plyometrics, heat, and altitude all have a cost. Do not add them together.",[825,856,857,860],{},[39,858,859],{},"Taper for the race you trained for."," Reduce volume for about two weeks, but keep some frequency and sharpness.",[11,862,864],{"color":13,"icon":863},"i-ph-compass",[16,865,866],{},"The right training type is rarely the most sophisticated one. It is the one that addresses your next limitation without breaking the consistency that allows adaptations to accumulate: coming back healthy enough to run again tomorrow.",[31,868,870],{"id":869},"what-the-evidence-can-and-cannot-say","What the evidence can and cannot say",[151,872,873,883],{},[154,874,875],{},[157,876,877,880],{},[160,878,879],{},"Topic",[160,881,882],{},"Best current reading",[173,884,885,893,901,912,920,928,936,944,952,960],{},[157,886,887,890],{},[178,888,889],{},"Easy-dominant training",[178,891,892],{},"Strong practical consensus; exact 80\u002F20 ratio is not a law",[157,894,895,898],{},[178,896,897],{},"Polarized vs pyramidal",[178,899,900],{},"Moderate and contested; both preserve an easy majority",[157,902,903,909],{},[178,904,905,906,908],{},"Threshold and VO",[20,907,22],{},"max work",[178,910,911],{},"Strong physiological rationale; dose must be individual",[157,913,914,917],{},[178,915,916],{},"Strength and plyometrics",[178,918,919],{},"Moderate evidence for better economy; progression matters",[157,921,922,925],{},[178,923,924],{},"Two-week taper",[178,926,927],{},"Strong meta-analytic support",[157,929,930,933],{},[178,931,932],{},"Altitude",[178,934,935],{},"Potentially effective, highly individual, costly and debated",[157,937,938,941],{},[178,939,940],{},"Heat acclimation",[178,942,943],{},"Strong for heat adaptation; general performance benefit is still emerging",[157,945,946,949],{},[178,947,948],{},"ACWR thresholds",[178,950,951],{},"The anti-spike principle is sound; exact ratio cutoffs are not",[157,953,954,957],{},[178,955,956],{},"Fiber-type conversion",[178,958,959],{},"IIx-to-IIa shift established; Type II-to-Type I conversion unresolved",[157,961,962,965],{},[178,963,964],{},"Youth and sex-specific prescriptions",[178,966,967],{},"Necessary but based on a thinner evidence base than adult male research",[969,970],"hr",{},[31,972,974],{"id":973},"references","References",[822,976,977,988,998,1008,1018,1028,1038,1048,1058,1068,1078,1088,1098,1108,1118,1128,1138,1148,1158,1168,1178,1188,1198,1208,1218,1228,1238,1248,1258,1268],{},[825,978,979,983,984,987],{},[52,980,982],{"href":54,"rel":981},[56],"Seiler S, Kjerland GO (2006)",". ",[512,985,986],{},"Quantifying training intensity distribution in elite endurance athletes: is there evidence for an optimal distribution?"," Scand J Med Sci Sports. 16(1):49-56.",[825,989,990,983,994,997],{},[52,991,993],{"href":61,"rel":992},[56],"Nøst TH, Aune TK, van den Tillaar R (2024)",[512,995,996],{},"Polarized training intensity distribution: a systematic review."," Sports. 12(12):326.",[825,999,1000,983,1004,1007],{},[52,1001,1003],{"href":109,"rel":1002},[56],"Bassett DR, Howley ET (2000)",[512,1005,1006],{},"Limiting factors for maximum oxygen uptake and determinants of endurance performance."," Med Sci Sports Exerc. 32(1):70-84.",[825,1009,1010,983,1014,1017],{},[52,1011,1013],{"href":132,"rel":1012},[56],"Frandsen JSB et al. (2025)",[512,1015,1016],{},"How much running is too much? Identifying high-risk running sessions in a 5200-person cohort study."," Br J Sports Med. 59(17):1203-1210.",[825,1019,1020,983,1024,1027],{},[52,1021,1023],{"href":284,"rel":1022},[56],"Dubouchaud H et al. (2000)",[512,1025,1026],{},"Endurance training, expression, and physiology of LDH, MCT1, and MCT4 in human skeletal muscle."," Am J Physiol Endocrinol Metab. 278:E571-E579.",[825,1029,1030,983,1034,1037],{},[52,1031,1033],{"href":336,"rel":1032},[56],"Billat VL et al. (1999)",[512,1035,1036],{},"Interval training at VO2max: effects on aerobic performance and overtraining markers."," Med Sci Sports Exerc. 31(1):156-163.",[825,1039,1040,983,1044,1047],{},[52,1041,1043],{"href":352,"rel":1042},[56],"Gibala MJ et al. (2009)",[512,1045,1046],{},"Brief intense interval exercise activates AMPK and p38 MAPK signaling and increases the expression of PGC-1alpha in human skeletal muscle."," J Appl Physiol. 106(3):929-934.",[825,1049,1050,983,1054,1057],{},[52,1051,1053],{"href":357,"rel":1052},[56],"Little JP et al. (2011)",[512,1055,1056],{},"An acute bout of high-intensity interval training increases the nuclear abundance of PGC-1alpha and activates mitochondrial biogenesis in human skeletal muscle."," Am J Physiol Regul Integr Comp Physiol. 300:R1303-R1310.",[825,1059,1060,983,1064,1067],{},[52,1061,1063],{"href":386,"rel":1062},[56],"Barnes KR et al. (2013)",[512,1065,1066],{},"Effects of different uphill interval-training programs on running economy and performance."," Int J Sports Physiol Perform. 8(6):639-647.",[825,1069,1070,983,1074,1077],{},[52,1071,1073],{"href":407,"rel":1072},[56],"Barnes KR, Kilding AE (2015)",[512,1075,1076],{},"Running economy: measurement, norms, and determining factors."," Sports Med Open. 1:8.",[825,1079,1080,983,1084,1087],{},[52,1081,1083],{"href":415,"rel":1082},[56],"Llanos-Lagos C et al. (2024)",[512,1085,1086],{},"Effect of strength training programs in middle- and long-distance runners' economy at different running speeds: a systematic review with meta-analysis."," Sports Med. 54(4):895-932.",[825,1089,1090,983,1094,1097],{},[52,1091,1093],{"href":424,"rel":1092},[56],"Spurrs RW, Murphy AJ, Watsford ML (2003)",[512,1095,1096],{},"The effect of plyometric training on distance running performance."," Eur J Appl Physiol. 89(1):1-7.",[825,1099,1100,983,1104,1107],{},[52,1101,1103],{"href":433,"rel":1102},[56],"Kubo K et al. (2007)",[512,1105,1106],{},"Effects of plyometric and weight training on muscle-tendon complex and jump performance."," Med Sci Sports Exerc. 39(10):1801-1810.",[825,1109,1110,983,1114,1117],{},[52,1111,1113],{"href":451,"rel":1112},[56],"Wilson JM et al. (2012)",[512,1115,1116],{},"Concurrent training: a meta-analysis examining interference of aerobic and resistance exercises."," J Strength Cond Res. 26(8):2293-2307.",[825,1119,1120,983,1124,1127],{},[52,1121,1123],{"href":460,"rel":1122},[56],"Ito E et al. (2016)",[512,1125,1126],{},"Bone mineral density in adolescent female athletes: relationship to menstrual status and sports type."," Nutrients. 8(12):781.",[825,1129,1130,983,1134,1137],{},[52,1131,1133],{"href":465,"rel":1132},[56],"Piasecki M et al. (2018)",[512,1135,1136],{},"Hip bone density, geometry and strength in master sprinters and endurance runners."," Med Sci Sports Exerc. 50(6):1240-1247.",[825,1139,1140,983,1144,1147],{},[52,1141,1143],{"href":586,"rel":1142},[56],"Heiderscheit BC et al. (2011)",[512,1145,1146],{},"Effects of step rate manipulation on joint mechanics during running."," Med Sci Sports Exerc. 43(2):296-302.",[825,1149,1150,983,1154,1157],{},[52,1151,1153],{"href":604,"rel":1152},[56],"Muñoz I et al. (2014)",[512,1155,1156],{},"Does polarized training improve performance in recreational runners?"," Int J Sports Physiol Perform. 9(2):265-272.",[825,1159,1160,983,1164,1167],{},[52,1161,1163],{"href":649,"rel":1162},[56],"Bosquet L et al. (2007)",[512,1165,1166],{},"Effects of tapering on performance: a meta-analysis."," Med Sci Sports Exerc. 39(8):1358-1365.",[825,1169,1170,983,1174,1177],{},[52,1171,1173],{"href":658,"rel":1172},[56],"Wang Z et al. (2023)",[512,1175,1176],{},"Effects of tapering on performance in endurance athletes: a systematic review and meta-analysis."," PLoS ONE. 18(5):e0282838.",[825,1179,1180,983,1184,1187],{},[52,1181,1183],{"href":677,"rel":1182},[56],"Levine BD, Stray-Gundersen J (1997)",[512,1185,1186],{},"Living high-training low: effect of moderate-altitude acclimatization with low-altitude training on performance."," J Appl Physiol. 83(1):102-112.",[825,1189,1190,983,1194,1197],{},[52,1191,1193],{"href":683,"rel":1192},[56],"Wehrlin JP et al. (2006)",[512,1195,1196],{},"Living high-training low for 24 days increases hemoglobin mass and red cell volume in elite endurance athletes."," J Appl Physiol. 100(6):1938-1945.",[825,1199,1200,983,1204,1207],{},[52,1201,1203],{"href":697,"rel":1202},[56],"Périard JD, Racinais S, Sawka MN (2015)",[512,1205,1206],{},"Adaptations and mechanisms of human heat acclimation: applications for competitive athletes and sports."," Scand J Med Sci Sports. 25(S1):20-38.",[825,1209,1210,983,1214,1217],{},[52,1211,1213],{"href":703,"rel":1212},[56],"Mikkelsen CJ et al. (2019)",[512,1215,1216],{},"Heat acclimation and hemoglobin mass: a meta-analysis."," Front Physiol. 10:212.",[825,1219,1220,983,1224,1227],{},[52,1221,1223],{"href":731,"rel":1222},[56],"Gabbett TJ (2016)",[512,1225,1226],{},"The training-injury prevention paradox: should athletes be training smarter and harder?"," Br J Sports Med. 50(5):273-280.",[825,1229,1230,983,1234,1237],{},[52,1231,1233],{"href":737,"rel":1232},[56],"Impellizzeri FM et al. (2021)",[512,1235,1236],{},"Acute:chronic workload ratio: is there scientific evidence?"," Front Physiol. 12:669687.",[825,1239,1240,983,1244,1247],{},[52,1241,1243],{"href":753,"rel":1242},[56],"Rogers MA et al. (1990)",[512,1245,1246],{},"Decline in VO2max with aging in master athletes and sedentary men."," J Appl Physiol. 68(5):2195-2199.",[825,1249,1250,983,1254,1257],{},[52,1251,1253],{"href":785,"rel":1252},[56],"Hallam LC, Amorim FT (2022)",[512,1255,1256],{},"Expanding the gap: an updated look into sex differences in running performance."," Front Physiol. 12:804149.",[825,1259,1260,983,1264,1267],{},[52,1261,1263],{"href":794,"rel":1262},[56],"Kraus E et al. (2023)",[512,1265,1266],{},"Female athlete triad risk factors are associated with trabecular-rich bone stress injuries in female runners."," Am J Sports Med. 51(7):1855-1863.",[825,1269,1270,983,1274,1277],{},[52,1271,1273],{"href":807,"rel":1272},[56],"Fink WJ, Costill DL, Pollock ML (1977)",[512,1275,1276],{},"Submaximal and maximal working capacity of elite distance runners. Part II. Muscle fiber composition and enzyme activities."," Ann N Y Acad Sci. 301:323-327.",[16,1279,1280],{},[512,1281,1282],{},"This article is for general education and is not medical advice. Get individualized clinical guidance before starting or escalating training if you have cardiovascular symptoms, persistent bone or joint pain, a history of stress fracture, menstrual disruption, pregnancy\u002Fpostpartum considerations, or a health condition.",{"title":1284,"searchDepth":1285,"depth":1285,"links":1286},"",2,[1287,1288,1294,1301,1302,1306,1307,1313,1314,1315,1316],{"id":33,"depth":1285,"text":34},{"id":83,"depth":1285,"text":84,"children":1289},[1290,1292,1293],{"id":88,"depth":1291,"text":89},3,{"id":115,"depth":1291,"text":116},{"id":138,"depth":1291,"text":139},{"id":148,"depth":1285,"text":149,"children":1295},[1296,1297,1298,1299,1300],{"id":268,"depth":1291,"text":269},{"id":303,"depth":1291,"text":304},{"id":345,"depth":1291,"text":346},{"id":366,"depth":1291,"text":367},{"id":379,"depth":1291,"text":380},{"id":397,"depth":1285,"text":398},{"id":470,"depth":1285,"text":471,"children":1303},[1304,1305],{"id":591,"depth":1291,"text":592},{"id":619,"depth":1291,"text":620},{"id":664,"depth":1285,"text":665},{"id":709,"depth":1285,"text":710,"children":1308},[1309,1310,1311,1312],{"id":713,"depth":1291,"text":714},{"id":743,"depth":1291,"text":744},{"id":765,"depth":1291,"text":766},{"id":775,"depth":1291,"text":776},{"id":800,"depth":1285,"text":801},{"id":819,"depth":1285,"text":820},{"id":869,"depth":1285,"text":870},{"id":973,"depth":1285,"text":974},"workouts","2026-08-15T13:59:32","Easy runs, long runs, tempo, intervals, hills, strength, recovery, heat and altitude: what each kind of training does, who needs it, and how to fit it together.","md",false,"\u002Fimages\u002Fblog\u002Frunning-training-guide.png",752,1424,{},true,"\u002Fblog\u002Frunning-training-guide",{"question":1329,"answer":1330},"What types of running training should I do?","Most runners need mostly easy running, a gradual long run, and strength training before they need hard workouts. Once a base is established, add one or two purposeful quality sessions such as threshold running, VO2max intervals, hills, or fartlek. 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