Running Knowledge
Evidence-based guides covering training science, physiology, nutrition, and gear to help you run smarter and faster.
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Foundational knowledge every runner should understand — training science, physiology, nutrition, and gear.
Compare age-based, Karvonen, and LTHR heart rate zone methods. Learn which approach best suits your training.
Understand the two key metabolic thresholds that define your training zones and racing potential.
Learn what lab tests measure, what to expect, and how to interpret your VO2 max and lactate results.
How your body adapts to running training — from mitochondria to muscle fibers to cardiovascular changes.
Evidence-based guide to supplements that may improve running performance, recovery, and health.
How to choose the right running shoes for your gait, distance, and training goals.
Deep Dives
Detailed explorations of specific running metrics, methods, and analysis techniques.
How hill running pace is normalized to flat ground — the science, platform differences, and practical training uses.
Why Garmin, Apple Watch, and lab tests show different numbers — the science behind VO2 Max, how to improve it, and what actually matters for performance.
How HRV, resting heart rate, sleep, and respiratory rate should guide every training decision you make.
The complete science of aerobic base building — why zone models disagree, what happens in your body, and how to train effectively.
Why efficient runners outperform those with higher VO2 Max, and how to improve your own running economy through training, biomechanics, and smart equipment choices.
Science-backed tapering strategies for marathons and half marathons — volume reduction, carb loading, race week protocols, and managing taper madness.
Why runners who lift weights run faster and get injured less — exercises, periodization, loading strategies, and a practical programming guide.
The science of marathon nutrition — carb loading, during-race fueling (60-90g/hr), hydration, gel comparisons, and gut training for race day success.
How heat acclimation and altitude training unlock performance — sauna protocols, live-high train-low, and the science behind environmental adaptations.
Debunking the 180 cadence myth, understanding ground contact time, vertical oscillation, and how to actually use your running dynamics data.
How to structure a training season — base building, intensity phases, polarized vs pyramidal training, and building a plan that peaks on race day.
Training with watts — how running power works, device comparisons (Stryd vs Garmin vs COROS), power zones, and when power is more useful than pace.
Data-driven analysis of age-related performance decline, what physiology changes (and what doesn't), and evidence-based strategies for masters runners.
Why 40% of runners get injured annually and what the evidence actually says about prevention — the load-capacity model, strength training, and debunking common myths.
The science of training hard without breaking down — the FOR/NFOR/OTS continuum, Banister's Fitness-Fatigue model, recovery modalities, and HRV-guided training.
The most underrated training tool — how sleep stages, extension, chronotype, and pre-race strategies directly impact your running performance and recovery.
What your rising heart rate is really telling you — cardiovascular drift mechanisms, the 5% decoupling threshold, drift testing, and tracking aerobic fitness.
Cold, rain, wind & safety — how weather affects running performance and when to modify or skip your run.
The Central Governor, self-talk, the wall, flow state, and DNF psychology — the science of the runner's mind.
Why your watch numbers vary — GPS physics, chipset evolution, optical HR accuracy, and how to interpret your running metrics.
Nasal breathing, rhythmic patterns, respiratory muscle training, and the science of breathing while running.
How the menstrual cycle affects running performance, recovery, and injury risk — plus evidence-based strategies for hormone-informed training, RED-S prevention, and managing iron deficiency.
The science of detraining, tissue healing timelines, and structured comeback protocols — plus the psychology of returning to running after injury or an extended break.
From uphill/downhill biomechanics and ultra marathon physiology to fueling strategy, mandatory gear, and the science of power hiking — everything you need to leave the road behind.
Pace variability explains 46% of marathon finish time variance. The data-driven guide to even pacing, negative splits, heat adjustments, and race day execution from 5K to marathon.
The science of daily nutrition for runners — macronutrient needs, pre/post-run meal timing, periodized nutrition, the carb debate, protein requirements, and practical meal planning.
Why 30-50% of runners experience GI distress — splanchnic blood flow, mechanical stress, FODMAP strategies, gut training protocols, and race-day prevention.
The biomechanics of treadmill running, the 1% incline debate (Jones & Doust 1996), heat training indoors, treadmill-specific workouts, and pace calibration tips.
Cardiovascular transfer effects, maintaining fitness while injured, activity-specific protocols for cycling and aqua jogging, and how to schedule cross-training around running.
When is Zone 3 the gray zone to avoid, and when is it the exact intensity you must train at? The complete guide to using tempo-zone training strategically across your training year.
How the Achilles tendon stores and returns 35% of running energy, why tendinitis is the wrong diagnosis, the carbon plate mechanism, and evidence-based tendon training protocols.
How your 24-hour body clock affects performance — core temperature cycles, morning vs afternoon training, chronotype, early-morning race prep, and jet lag strategies for destination races.
The science of late-race leg failure — motor unit recruitment, the three fatigue mechanisms, EMG evidence from ultra-marathon research, eccentric damage, and training strategies for neuromuscular resilience.
The real chemistry behind the runner's high — endocannabinoids, dopamine habit loops, BDNF-driven neuroplasticity, evolutionary origins of running pleasure, and why some people get hooked while others don't.
Why identical training produces dramatically different results — the HERITAGE Family Study, genetic architecture of VO2max trainability, controllable vs. fixed factors, and strategies for every response type.
Evidence-based guide to running improvement rates by training experience — VDOT benchmarks per training block, how age affects progression, and how to break through plateaus at any level.
How caffeine works, optimal dosing (3-6 mg/kg), the habituation myth, CYP1A2 genetics, GI management, and a step-by-step race day caffeine protocol backed by meta-analysis data.
Sweat rate testing, sodium variability (200-1800 mg/L), the drink-to-thirst vs planned debate, hyponatremia risks, electrolyte product comparison, and distance-specific hydration strategies.
How body weight affects pace (~1 kcal/kg/km), body fat ranges by level, Fitzgerald's Racing Weight, relative VO2 max mechanics, RED-S warning signs, and evidence-based weight management for runners.
Hour-by-hour recovery protocol with specific foods and cooking methods, biomarker timelines (CK, CRP, IL-6), immune open window protection, NSAID debate, week-by-week return plan, and wearable data signals for return-to-running decisions.
How running extends lifespan — the dose-response evidence, VO2 max as mortality predictor, and longevity training.
What runners need to know about Ozempic, Wegovy, and GLP-1 receptor agonists.
Evidence that exercise rivals therapy for depression and anxiety — protocols and practical guidance.
Demystifying the alphabet soup of training load — Banister's model, Garmin Status, ACWR, and practical frameworks.
Rate of perceived exertion, the talk test, session RPE, and when to trust feel over your watch.
Why elite runners train easy 80% of the time — polarized vs pyramidal, the black hole, and how to audit yours.
Evidence-based ranking of ice baths, sauna, compression, foam rolling, and more for runners.
The science of two-a-day training — glycogen adaptations, weekly templates, and a 4-week introduction plan.
Trimester-by-trimester modifications, pelvic floor readiness, and postpartum return protocols.
Base, build, peak, taper — Daniels vs Pfitzinger vs Hansons compared with weekly templates.
Foam energy return, rocker geometry, biomechanical trade-offs, and major models compared.
Why run-walk intervals work, what happens in your body in 8 weeks, and a science-based C25K plan.
VO2 max estimates, Training Status, recovery time, running dynamics — what to trust and when to ignore.
Five methods to find your true easy pace, why ego is the enemy, and VDOT-based protocols.
A decade-by-decade guide — what peaks when, strength by age, recovery adjustments, and masters inspiration.
Ingebrigtsen-style sub-threshold training — blood lactate 2–3 mmol/L workouts, weekly structure, and who benefits.
Low ferritin, hepcidin response, foot-strike hemolysis, and the alternate-day iron dosing revolution.
The #1 running injury decoded — hip strength, cadence fixes, 12-week rehab, and return-to-running progression.
Why Kipchoge doesn't slow at km 35 — the science of late-race decline and protocols that build fatigue resistance.
CS, D' (D-prime), and the two-parameter model — a physics-grounded alternative to VDOT for data-driven runners.