Huberman LabDr. Andy Galpin: How to Assess & Improve All Aspects of Your Fitness | Huberman Lab Guest Series
CHAPTERS
- 0:00 – 12:00
Defining Fitness: Goals, Adaptations, and Why Methods Are Secondary
Huberman introduces Galpin and frames fitness as encompassing aesthetics and function. Galpin lays out nine core physiological adaptations and explains why health and fat loss are outcomes of training these, not separate training goals. They set the agenda for using simple concepts to guide many possible methods.
- •Most people exercise for aesthetics (how they look) and function (how they perform).
- •Fitness should support immediate goals and long-term wellness span.
- •Galpin’s mantra: many methods, few concepts—the adaptations matter more than the specific workout style.
- •Nine adaptations introduced: skill, speed, power, strength, hypertrophy, muscular endurance, anaerobic capacity, maximal aerobic capacity, long-duration endurance.
- •Health and fat loss are byproducts of training combinations of these nine, not distinct training types.
- 12:00 – 38:00
The Nine Adaptations: From Skill to Long-Duration Endurance
Galpin defines each of the nine adaptations with concrete examples and time domains. He distinguishes local muscular endurance from systemic cardiovascular capacity and clarifies where VO2 max and classic ‘cardio’ fit.
- •Skill/technique: moving efficiently in specific patterns (running, swinging a club, throwing).
- •Speed: peak movement velocity or acceleration.
- •Power: force × speed, distinct from pure strength.
- •Strength: maximal force in a single effort (1RM), not reps over time.
- •Hypertrophy: muscle size, the first purely aesthetic adaptation in the list.
- •Muscular endurance: reps in the 5–50 range for local muscle groups (e.g., push-up tests).
- •Anaerobic capacity: max all-out work for ~30–120 seconds, highly fatiguing and systemic.
- •Maximal aerobic capacity: VO2 max, typically stressed in 8–15 minute maximal efforts.
- •Long-duration endurance: continuous submaximal work beyond ~20 minutes (often 20–60+ minutes).
- 38:00 – 1:12:00
Endurance vs Strength in the Real World: Skiers and Twins
Using elite elderly cross-country skiers and an identical twin case, Galpin shows how decades of endurance training massively preserves aerobic capacity yet leaves strength and muscle mass largely unimproved. The twin data vividly isolates training effects from genetics.
- •80–90‑year‑old lifelong skiers had VO2 max values (~35–38 ml/kg/min) similar to college men.
- •American non-exercisers in their 80s hovered near the ‘line of independence’ (≈18 ml/kg/min) with almost no reserve.
- •Despite huge VO2 advantages, skiers’ leg strength and function were no better than non-exercisers.
- •Monozygotic twins in their 50s: one had 35 years of endurance training, the other was sedentary.
- •Endurance twin: better lipids, BP, resting HR, VO2 max, but no more muscle and often weaker than the sedentary twin.
- •Muscle fiber biopsy: sedentary twin had roughly typical 50/50 distribution with ~20% hybrids; endurance twin was ≈95% slow-twitch, proving massive long-term fiber-type plasticity.
- •Conclusion: endurance alone is excellent for disease risk and VO2 max but insufficient for global function and strength.
- 1:12:00 – 1:52:00
Exercise Science History: How We Got Lopsided Training Cultures
Galpin traces the roots of modern exercise science from the Harvard Fatigue Lab through endurance’s dominance, early fear of strength training, Arnold Schwarzenegger’s cultural impact, and the rise of bodybuilding and then CrossFit. This history explains why people still inherit biased beliefs about ‘proper’ training.
- •Harvard Fatigue Lab (1927–1947) pioneered holistic performance research blending systems, not just organs.
- •1950s: early 'exercise is medicine' movement and data supporting combined strength + endurance for health.
- •Strength training was stigmatized after a pro–strength doctor died young, reinforcing myths about lifting and heart risk.
- •Peter Karpovich initially opposed lifting; a live demo of strong, flexible lifters flipped his stance, starting pro-strength research.
- •ACSM formed in the mid‑1950s focused mainly on clinical exercise and endurance.
- •1970s ‘runner’s boom’ and iconic feats (4‑minute mile, Everest) cemented endurance dominance in science and culture.
- •1977+ Arnold (Pumping Iron, Conan, Terminator) ignited global interest in hypertrophy and physique transformation.
- •NSCA’s formation and early strength coaches in NCAA/NFL pushed muscle/strength into sport.
- •Bodybuilding culture led to body-part splits, high volume isolation work, and long gym sessions—great for size, poor for time-efficiency and cardiorespiratory fitness.
- •CrossFit and similar models later emphasized whole-body, fast, score-driven workouts—more time-efficient and ‘functional’ but often high risk and burnout-prone when technique is deprioritized.
- 1:52:00 – 2:06:00
Women, Research Gaps, and the Future of Sports Science
Huberman and Galpin discuss women’s participation in strength training and sports science. While more women are entering applied roles (coaches, sport scientists), there’s still a major research gap in high-performance female-specific science, especially around topics like birth control and training.
- •Galpin observes many female athletes and students in practice but relatively few female lead researchers and senior strength coaches—though this is changing.
- •Professional sport is increasingly hiring women into performance and sport science roles (e.g., MLB, NBA).
- •NIH now requires ‘sex as a biological variable’ in research, ending male-only rodent and human designs.
- •Next critical step: design *female‑specific* high-performance studies (e.g., menstrual cycle, contraceptive effects, female athlete norms) rather than just including women in male-oriented protocols.
- •Major unanswered questions: how different birth control types affect performance, recovery, and training adaptation; optimal programming across cycles; normative female benchmarks for high performance.
- 2:06:00 – 2:26:00
Where Training Is Headed: Blending Strength, Power, Endurance, and Hypertrophy
With multiple training cultures now mature—powerlifting, weightlifting, CrossFit, bodybuilding—Galpin argues we can cherry-pick the best protocols from each to target specific adaptations and avoid unwanted ones. This enables individualized ‘health’ rather than one-size-fits-all prescriptions.
- •Powerlifting offers principles for maximizing strength without necessarily gaining size.
- •Weightlifting provides methods for developing power and speed.
- •CrossFit/obstacle racing highlight mixed-modal conditioning and broader work capacity.
- •Bodybuilding remains the best lab for targeted hypertrophy and localized aesthetics.
- •‘Health’ prescriptions should differ person-to-person: someone strong but unfit needs more endurance; another lean but weak needs more hypertrophy/strength.
- •Future of programming: clearly define which of the nine adaptations you want, then borrow methods from the domains that excel at each, rather than blindly copying any one sport.
- 2:26:00 – 2:36:00
How to Test Movement Quality: Joint-by-Joint Screening
Galpin outlines a simple, inexpensive framework to assess movement skill and identify high-risk patterns. Using basic lifts and video, you rate each major joint on symmetry, stability, awareness, and range of motion to decide what’s safe to load, what needs technique work, and what to avoid.
- •Key joints: shoulder, elbow, lumbar spine, hip, knee, ankle.
- •Use four movement patterns: upper-body push (push-up), upper-body pull (pull-up or row), lower-body push (squat), lower-body pull (hinge/deadlift).
- •Record front and side views, 3–10 slow reps, bodyweight only.
- •Assess each joint for: symmetry (left/right, front/back), stability (no shaking/shifting), awareness (can you correct once cued?), range of motion (full, controlled ROM without compensation).
- •Simple scoring: 0 = unsafe/acutely high risk; 1 = minor flaw, load modestly; 3 = acceptable to train normally.
- •If possible, a skilled physical therapist or movement specialist is the gold standard for deeper evaluation.
- 2:36:00 – 3:00:00
Testing Power and Strength: Jumps, Grip, and Leg Metrics
Galpin gives low-tech and high-tech options to measure power and strength, followed by normative benchmarks. He emphasizes that most people don’t need elaborate lab equipment to get meaningful data and identify red flags.
- •Power (simple tests): broad jump aiming for at least body height; two-handed vertical jump (≈24"+ men, ≈20" middle-aged women).
- •High-tech power: force-plate jumps and bar-velocity profiling across %1RM to map your force-velocity curve and tailor power training loads.
- •Grip strength (low-tech): dead hang 30–60+ seconds from a standard bar.
- •Grip strength (device): handheld dynamometer, aiming ≈40–60 kg men, ≈35–50 kg women; <10% asymmetry between hands.
- •Leg strength: leg extension ≈bodyweight for 1 rep (men and women, scaled down ≈10% per decade after 40).
- •Alternative: front/goblet squat hold with ~½ bodyweight in the bottom position for 45 seconds; a basic entry standard is ⅓ bodyweight for 30 seconds.
- •Use rep-to-max calculators if you’re uncomfortable truly maxing—perform ≤5 reps and estimate 1RM from online tools.
- 3:00:00 – 3:16:00
Muscular Endurance: Push-Ups, Planks, and Rep-at-75% Tests
They define muscular endurance as local, not global, and explain why very low rep capacity is often a strength issue, not endurance. Galpin provides practical push-up, plank, and percentage-based tests to evaluate whether your muscles can sustain submaximal loads.
- •Upper-body endurance benchmarks: men should ideally hit ≥25 continuous full-ROM push-ups (min. 10); women ideally ≥15 (min. 5). No pausing—continuous reps only.
- •Plank standards: front plank ≥60 seconds; side plank ≈45 seconds each side.
- •If someone can’t do at least ~3 reps in an exercise (e.g., push-ups), the problem is strength, not endurance.
- •Classic illustration: a female runner trained with high-rep assisted pull-ups but never improved from 0 strict pull-ups; she needed maximal strength programming first.
- •Quantified local endurance test: load the same exercise to 75% of your 1RM and perform max reps. Fewer than ~8 reps suggests poor muscular endurance; 8–12 reps is a normal target zone.
- 3:16:00 – 3:28:00
Anaerobic Capacity and Heart-Rate Recovery
Galpin discusses how to test short, brutally hard efforts that stress the anaerobic system and how to interpret heart-rate recovery as a simple, powerful marker of cardiovascular fitness.
- •Lab gold standards: Wingate test (30 s all-out cycling against a set resistance) and Bosco test (60 s maximal vertical jumps on a force plate).
- •Field options: 30–60 s all-out efforts on bike, rower, or sprints—choose modalities with minimal technical skill to avoid injury.
- •Rather than obsess over exact work numbers, focus on whether you can complete the effort and how your heart recovers.
- •Target HR recovery: after reaching near-max HR, aim to drop ~30 bpm in the first minute (~0.5 beat/s), ~60 bpm by two minutes, and further by three minutes.
- •Slower HR recovery indicates limited anaerobic and/or aerobic conditioning and warrants more conditioning work.
- 3:28:00 – 3:48:00
VO2 Max and Long-Duration Endurance: Minimal Standards and Preferred Zones
They move into testing maximal aerobic capacity with simple run/walk protocols and define preferred VO2 ranges for robust health. Galpin then defines what ‘good enough’ looks like for steady-state endurance using time, not fancy zones.
- •VO2 max lab gold standard: treadmill or cycle ergometer test with gas analysis and strict criteria for true max.
- •Field tests: Cooper 12‑minute run (max distance in 12 minutes) and Rockport 1‑mile submax walk test (time + HR entered into standard equations).
- •Bare-minimum VO2 max: ~35 ml/kg/min for men, ~30 ml/kg/min for women. Strong preferred targets: ≥55 men, ≥50 women (Costill quips ‘no human excuse’ to be below 60).
- •Elite endurance athletes can reach 70–90+ ml/kg/min; some reported near 100 in exceptional cases.
- •Long-duration endurance test: maintain non-walking continuous work for >20 minutes (ideally 20–30+ minutes) without breaks.
- •Advanced challenge: perform the long-duration effort breathing only through the nose; if you can manage 30 continuous nasal-breathing minutes, your base endurance is solid.
- 3:48:00 – 4:10:00
How Often and How to Schedule a Full Fitness Assessment
Galpin recommends treating comprehensive testing like annual lab work, then retesting weak spots more often. He outlines how to sequence tests over days and within a single session to maximize data quality without derailing training.
- •Run the *full* nine‑adaptation test battery at least once a year; every six months is even better.
- •Retest weakest adaptations monthly or quarterly; retest strong ones annually or less often.
- •Do body comp and movement screens when fresh, after 24–48 hours without hard training.
- •Within days: prioritize non-fatiguing tests (movement, power, 1RM strength) first; follow with muscular endurance; then anaerobic efforts; finish with long-duration work.
- •You can cluster: Day 1 – body comp + movement + strength/power + muscular endurance; Day 2 – VO2 max test; Day 3 – anaerobic + long-duration.
- •Per Galpin: better to do an imperfect but consistent test battery than delay forever aiming for clinical precision.
- 4:10:00
Closing: From Assessment to Protocols in Future Episodes
They highlight that no one needs to be elite in all nine areas; the goal is to avoid severe deficits that compromise independence, health, and performance. Galpin previews upcoming episodes that will give detailed, evidence-based programming to improve each adaptation based on the test results.
- •You don’t need to be exceptional in every domain, but you must not be catastrophically low in any one that limits safety or independence.
- •‘Performance anchors’ are the weakest adaptations; raising them improves everything else with less friction.
- •Objective metrics, even from simple tests, create motivation and direction for training.
- •Future episodes will cover: specific speed, power, strength, and hypertrophy protocols; then detailed conditioning programming, nutrition, and recovery strategies.
- •Huberman emphasizes the value of Galpin’s ability to translate complex science into clear, actionable steps for non‑scientists.
