The guest
Dr. Andy Galpin: A full, tenured professor of kinesiology at California State University, Fullerton and a leading expert in exercise science who works with everyday people and professional athletes. He researches muscle physiology from the cellular level up and co-founded the sleep diagnostics venture Absolute Rest.
What this episode covers
Andrew Huberman hosts exercise physiologist Dr. Andy Galpin for a deep, multi-hour breakdown of how to train for the roughly nine adaptations exercise can produce. Galpin lays out the modifiable variables (exercise choice, intensity, volume, rest, progression, frequency) and gives surefire rep/set schemes for strength, hypertrophy, power, and the different types of endurance. He covers recovery, breathing down-regulation, the interference effect, hydration (the 'Galpin Equation'), cold and heat exposure, and subjective/objective recovery markers. He closes with the most effective performance supplements and introduces his sleep-diagnostics company Absolute Rest.
Recommended on this episode
ProductRecommended
Creatine monohydrate
“it is my crown jewel... the Michael Jordan of all supplementation”
“it is my crown jewel. It is in my opinion, without question, the Michael Jordan of all supplementation. And that's creatine monohydrate.”— guest
ProductRecommended
Sodium bicarbonate (baking soda)
“Very effective”
“there's a handful of these ubiquitously effective supplements for performance. Sodium bicarbonate's one of them, and it's a very ingenious idea”— guest
ProductRecommended
Beta alanine
“very effective, very cheap, very safe. Well studied”
“Beta alanine is another very classically effective one... So very effective, very cheap, very safe. Well studied.”— guest
The guest's own work
ProductBy the guest
Absolute Rest
Absolute Rest (Andy Galpin / Cody Burkhart)
“So where can people learn more about absolute rest? - Absoluterest.com.”— guest
Also referenced (named, not recommended)
ProductReferenced
Levelen sweat test
Levelen
“The original one that most of us used in the background for many years is called Levelen. They'll send you out a little patch”— guest
ProductReferenced
Gatorade sweat patch
Gatorade
“Gatorade has a patch. For 25 bucks you can get two of them. You can put that patch on your left forearm and download the Gatorade app”— guest
ProductReferenced
ChiliPad
Chili
“He had the basic hygiene stuff down and temperature and all that stuff. And he had his ChiliPad and all that to keep the thing cool.”— guest
ProductReferenced
Oura Ring
Oura
“some of 'em it's as simple as how'd you feel today and what was your vertical jump... not an Oura ring, nothing against Oura, but like full analytics”— guest
ProductReferenced
Air Assault / Airdyne bike
Assault Fitness
“That can be a 30 second go on an Airdyne or Air Assault bike.”— guest
Big reveals from this episode
- Galpin says hypertrophy training plus anaerobic conditioning hit the most physiological systems at once for the most all-around benefit.
- Contrarian point: you can train a muscle for strength every single day because true strength work causes little muscle damage; only hypertrophy needs 48-72h recovery.
- The intent to move a weight fast matters more than actual bar speed for power and strength gains, even if velocity is identical.
- Galpin admits he was wrong for years preaching against concurrent training; the 'interference effect' is real but greatly overblown for most people.
- Getting in an ice bath immediately after hypertrophy training is roughly a 10% attenuation of growth: 'you just shouldn't have done the session.'
- He crowns creatine monohydrate 'the Michael Jordan of all supplementation,' citing clinical and neurological research, not just muscle.
- An athlete had ~280 breathing episodes per night; a simple back-pillow cut awakenings 85% the first night and tripled testosterone in three months.
- Huberman flags that false sleep feedback can drive performance, raising doubt about opaque recovery-score algorithms in consumer devices.
Worth remembering
- Soreness is a terrible proxy for workout quality; even pro athletes don't use it as a metric of a good session.
- We lose fast-twitch fibers preferentially with aging, which is a major driver of age-related strength and size loss.
- Recent meta-analyses suggest ~10 working sets per muscle per week is the minimum for growth, with 15-25 sets better for trained people.
- Anywhere from 5 to 30 reps per set produces roughly equal hypertrophy as long as you train close to failure.
- The '3-to-5' rule: 3-5 exercises, 3-5 reps, 3-5 sets, 3-5 min rest, 3-5 days a week for strength and power.
- Huberman's post-workout afternoon energy crash was caused by un-clamped adrenaline, fixed by 5 minutes of down-regulation breathing.
- Hydration baseline: drink half your body weight in ounces of water per day; during exercise, body weight in pounds divided by 30 in ounces every 15-20 min.
- Lactate is not the cause of fatigue; it actually buffers hydrogen and delays fatigue, plus serves other beneficial roles.
- Sodium bicarbonate (about half a teaspoon, taken ~45 min pre-workout) alkalizes the body to delay fatigue, but can cause severe gastric distress.
- Cold immersion drops HRV sharply at first but raises it above baseline for hours after, making mornings a great time for it.
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