Dr. Andy Galpin (@DrAndyGalpin), Professor of Kinesiology at California State University, Fullerton, and one of the foremost experts in the world on the science and application of methods to increase strength, hypertrophy, and endurance performance.
Andrew Huberman and Any Galpin take a deep dive into the fundamental principles of strength and hypertrophy training and building endurance. They review the science and provide practical tips to optimize training and recovery, hydration, supplements, sleep, nutrition – and everything between.  
Host: Andrew Huberman (@hubermanlab)
The basic concepts of fitness are few, but the methods are vast
The 9 main concepts of training: skill, speed, power (function of speed and strength), strength, hypertrophy (growing muscle mass), muscular endurance, anaerobic power (ability to produce and sustain work in short bursts), VO2 max (max heart rate), long-endurance (30+ minutes with no break)
There are a handful of things you have to do in order to make all of the main concepts work, but you will not see changes in any domain without progressive overload
Progressive overload: adaptation happens as a byproduct of stress – you have to push the system
If you do the same exercises over time, you will plateau – progressive overload could be in the form of adding weights, adding repetitions, increasing frequency, varying complexity of movement
Modifiable variables: the things that will change the outcome of movements or exercises, namely choice, intensity, volume, rest intervals, progression, frequency
The exercise itself does not determine the adaptation – for example, if you do the wrong rep or set range in a bench press you might get muscular endurance but won’t actually get strength adaptation
In theory, any exercise can produce any adaptation given the execution is performed properly
“The first thing you should think about if you want to get stronger or add muscle is not the exercise choice, it is the application of the exercise – what are the sets, rest, rep range you’re using.” – Dr. Any Galpin
Exercise choice is an important variable: if you want to get stronger, think about what muscle groups you want to use more and that will lead you to the exercise you should do
If you are a novice or don’t have a coach, select exercises that are technically easier to handle – goblet squat, split squat, machine exercises – where risk is low and benefit is high
Intensity: not just perceived effort but the actual percentage of 1 rep max (1RM) or percentage of heart rate or VO2 max
If you don’t know your 1RM or workout solo with no coach, use an online conversion chart to estimate your 1RM
When you start, the most important thing is to learn to move correctly and give your body time to develop tissue tolerance
“In general, soreness is a terrible proxy for exercise quality. It’s a really bad way to estimate whether it was a good or bad workout.” – Dr. Andy Galpin
Stress is required for adaptation: you want to feel like you worked but on a scale of 1-10 soreness you want to spend most of your time around a 3 post-exercise between workouts
You can train a sore muscle but if you’ve gone too hard where you’re sore just sitting stationary, you’re actually going to set yourself back
It is possible to increase strength without dramatically increasing muscle size
For starters: (1)choose exercises that will take you through the full range of motion; (2) choose exercises you feel stable and comfortable with; (3) priority is to maintain good form; (4) balance between movement areas
Upper body: incorporate both press/push and pull in vertical and horizontal planes
Lower body: press/push (e.g., squat – pushing away the ground), hinge/pull (i.e., deadlift – pulling something up)
In reality, every exercise is a pull because muscles can only contract and pull on itself
If you were choosing exercises for a single workout: pick one from each category – upper body press, upper body pull, lower body hinge, lower body press
An untrained person will preferentially get better at everything – cardio, strength, anaerobic, etc.
If you want to get better at the strength you need to generate more force – you have to impose strength (not repetitions) working close to 85%
By definition, true strength training is going to be 5 reps or less per set
A classic recipe for strength training: warm-up set of 10 at 50%, set of 8 at 60%, set of 8 at 70%, set of 5 at 75% – then go into 2-3 working sets at 85%; typical rest should be 2-4 minutes unless doing supersets
The primary driver of strength is intensity, not volume – we need high rest to offset the intensity demands
Supersets will slightly reduce strength gains but work well for the average person who isn’t trying to set records and wants to finish their workouts a bit faster
Soreness is not a good barometer of a workouts
If training for hypertrophy: err on the side of greater recovery – towards 3 days for the same muscle group – because you want to allow protein synthesis to occur (takes 48-72 hrs)
Hypertrophy target: a minimum of 10 working sets, per muscle group, per week, 5-30 reps per set
Getting in enough volume is the main challenge with splitting workouts but shooting for hypertrophy
If your goal is hypertrophy and you train the same muscle group too soon, you’ll actually blunt the growth response
The primary driver of hypertrophy is not the same as the primary driver of strength (intensity)
Hypertrophy training is more straightforward than strength training – the main considerations are working to a muscular failure somewhere between 5-30 reps and resting 48-72 hours
Intentionally change the rep schemes for variability
If training for strength, speed, or power: you need greater stimulus and shouldn’t really be sore – frequency can be as high as you want, you could even train the same muscle groups daily
Strength training target: twicer per week, per muscle
Early adaptations of strength training are hedged toward the nervous system before it changes to the muscle side of the equation
All muscle contraction is a combination of three areas: (1) starts with a nervous system signal; (2) muscular contraction; (3)connective tissue signals
Speed, power, strength training tips: pick 3-5 exercises, 3-5 reps, 3-5 sets, take 3-5 minutes rest between, train 3-5 days per week
The only distinction between power and strength is intensity – if you want strength shoot for 85% of 1RM; if you want power, move lighter and hover around 40-70% 1RM
  • Power = strength x speed
You will get greater benefits if you can contract the muscle group you’re working
Bent row example: you might think you’re doing a great row because you’re bending your elbows and pulling the bar up – but unless you are activating your lats, you’re not getting back development
Execution determines adaptation, not exercise choice
Coaching contraction: you have to build awareness of the muscle group you are working – it can be helpful to have someone actually touch the muscle and you practice contracting that muscle
A lifting belt can help enhance sensory feedback and support greater core activation than otherwise because it’s giving you proprioceptive feedback
Core activation is actually a cylinder around your midsection (not just “six-pack muscles”) – it’s the front, side, and back
Tip: workout with a partner and touch the muscle group you’re targeting, then have them try to squeeze that muscle
Eccentric movements (descending part of movement) are a great way to enhance muscle awareness and learn how to activate muscle group
Eccentric movements are greater forced output and great for strength development & hypertrophy
We want to separate breath from brace when engaging core in exercise
If you can maintain intramuscular abdominal pressure while breathing, it doesn’t really matter when you breathe – but really a small percentage of people can do this
General exercise breathing protocol: maintain a breath-hold during the lowering/eccentric most dangerous part of the movement & exhale on the concentric portion
Breathing example: breathe in a hold during lowering, exhale, and push away
If you’re doing one rep, you can hold your breath the whole way through
Breathing strategy for reps: you don’t have to reset breathing and focus on it every rep as that can be energy consuming – if hitting 3-8 reps, every third breathe reset and go
Breathing and an effective breathing strategy for recovery and a huge opportunity for improvement – try the physiologic sigh after exercise, double inhale through the nose followed by long exhale through the mouth for 3-5 minutes
Eccentric absorption is high in endurance workouts – you never have two feet on the ground when running
When you’re just getting started, start with activities that are concentric based: biking, rowing, sledding
Do not: jump into an activity with a lot of eccentric landing right off the bat (e.g., running 30+ minutes, box jumps) – this is a recipe for soreness and injury
Tip: keep it simple – start with 10 minutes on the treadmill, 10 minutes on the bike, 10 minutes on the rower
Target: 150-180 minutes of zone 2 cardio
You can train zone 2 cardio daily even when the goal is strength or hypertrophy
“Zone 2 you have almost no ability to block your hypertrophy when you’re working at a conversational pace.” – Dr. Andy Galpin
Zone 2 training can actually improve strength or hypertrophy because you will increase blood flow to the area
Interference effect: it doesn’t matter whether you lift or do cardio first if you really stay in zone 2
“If you’re an endurance athlete, adding strength training is almost always going to be beneficial.” – Dr. Andy Galpin
The interference effect is not something most of us need to worry about when comparing the benefit of well-roundedness for overall physiologic health
Tip: take your phone calls on the move and pace around or walk
You want to get to max heart rate once per week: all systems benefit by being challenged to the max because stress increases adaptation – these exercises can be daunting, even once every other week is ok (don’t forget to warm up well!)
Zone 2 tips: focus on nasal breathing – if you have to mouth breathe, reduce the intensity
Sustain hard work for 4-12 minutes: work your way up to sustaining 80% heart rate max for 2 minutes + 2 minutes rest
Try repeats: lower intensity than max work, work hard 2-6 minutes then take equal rest between efforts  
Muscular endurance is important for the general maintenance of joint health
Types of muscle fibers: (1) fast-twitch; (2) slow-twitch
Fast-twitch fibers tend to be bigger, more glycolytic, contract at a higher velocity, and are less fatigable
Slow-twitch fibers tend to be smaller, more packed with mitochondria, generally better at burning fat as fuel, contract at lower velocity
Each muscle has a combination of fast and slow-twitch fibers with different combinations depending on the muscle
Muscular endurance helps slow-twitch muscle fibers and slow-twitch dominant muscles
If you are getting tweaks or injuries, it’s not the exercise itself you need to adjust the levers of intensity, complexity, and volume
Exercising for pain: with things like low back pain, there’s not usually damage, it’s hypersensitization of pain signals – train right below the signal and desensitize it
Injuries happen because stress gets put on a part of the system that should not absorb that much stress
Workouts can be done fasted or fed – personal preference
Underhydration – you will die
Dehydration and hypernatremia are both bad
If you start your exercise with poor hydration, it’s really difficult (almost impossible) to catch up
You need to set yourself up for proper hydration every day so exercise doesn’t totally drain you when you lose fluid
Foundation of daily fluid intake: half your body weight in ounces is a loose guideline for fluid consumption
Galpin equation for fluid replenishment during exercise or demanding activity: start exercise hydrated with electrolytes (not just water) then every 15 minutes consume (in ounces) your body weight (in pounds) / 30
Fluid content in food is actually very high if you are eating a non-processed, high-quality diet
High sodium and low sodium both have their consequences
Identify whether you’re high sodium or low sodium sweater to determine sodium needs: check out Levelen, Gatorade Gx sweat patch, wear a hat or headband – is the sweat a white band or clear?
General hydration rule: 500mg sodium intake pre- and post-exercise
If you’re a high sodium sweater you might want to increase
The paradigm matters tremendously: are you pushing for recovery or gains? Are you pushing for adaptation or optimization?
When pushing for adaptation you aren’t as worried about recovery and are pushing for stress – when you’re pushing for optimization it’s the opposite
Getting into an ice bath immediately after a hypertrophy session negates the benefits so much, you might as well not do the session – it’s about 10% attenuation
Ideally, wait 48 hours before ice bath if your goal is hypertrophy
For strength, it’s not as big of a concern but ideally, wait a few hours or hit the ice bath on rest days
It seems ice bath seems to be less of a concern for endurance
Sauna (or hot bath) increases blood flow and augments strength & hypertrophy – but now you need to seriously consider proper hydration
Idea recipe: train then sauna or hot bath, ice bath on rest days
Two tests: grip strength upon waking & carbon dioxide test (ability to do long, controlled exhale)
Anytime total stress load outpaces recovery capacity, you’re either going backward in physical ability or reducing adaptability – options: reduce stress intake or increase recovery capacity
Our goal is to introduce the most stress possible and recover
Track subjective and objective measures to figure out which levers to pull
Whichever recovery metrics you use, be consistent and take those measurements at the same time every day
Sodium bicarbonate (baking soda) has been shown to help recovery but can cause gastric distress – start with a pinch in the water!
Deeper dive coming later but consider supplementing with beta-alanine (delays buildup of acid), creatine monohydrate
Incredible sleep optimization tool coming soon (Absolute Rest) that doesn’t just dive into what your numbers are, but why they are like that – and can actually come to your home and build out the ideal environment for you