Galpin equation hydration
Three to six ounces of fluid every 15 to 20 minutes of exercise
The equation covers drinking during exercise rather than around it. It works out at a few sips every 15 or 20 minutes, roughly three to six ounces for most people, and it assumes you start the session already hydrated. So it sits on top of a daily baseline of about half your body weight in ounces. Water alone is not the whole job either. Sodium is the electrolyte that matters most. Needing the bathroom three or four times after training means you overshot.
People on record
Sorted by strength of stance
Does it: documented as part of their own routine. Recommends: explicitly advises other people to do it. Discusses: covered it substantively without clear personal adoption; this can include criticism or disagreement.
- Andy GalpinRecommends
Exercise physiologist · Perform podcast
The equation is his, and Andrew Huberman named it after him.
Source: Perform: The Fundamentals of Nutrition, Hydration & Performance Fueling
Aimed at the same thing
Other entries filed under fitness or energy.
- Protocol$$$Cheap: Roughly under $50, or under $15/month.
Resistance training
Lifting weights 2-4 times a week to build and hold muscle
On record from 43 of 62 tracked people: 37 do it, 4 recommend it, 2 have discussed it - ProtocolFREE, no cost
Zone 2 cardio
Easy aerobic work you can hold a conversation through, 3+ hours a week
On record from 12 of 62 tracked people: 5 do it, 5 recommend it, 2 have discussed it - Protocol$$$Cheap: Roughly under $50, or under $15/month.
Cycling
Steady riding, outdoors or on a stationary bike, as daily low-intensity cardio
On record from 9 of 62 tracked people: 9 do it - ProtocolFREE, no cost
High-intensity interval training
Short all-out efforts with full recovery in between, a few times a week
On record from 6 of 62 tracked people: 5 do it, 1 has discussed it - Protocol$$$Cheap: Roughly under $50, or under $15/month.
Running
Regular running, from a short daily loop up to ultramarathon distance
On record from 6 of 62 tracked people: 5 do it, 1 recommends it - Protocol$$$Cheap: Roughly under $50, or under $15/month.
Swimming
Lap swimming as low-impact cardio and a reset for the head
On record from 6 of 62 tracked people: 6 do it
Protocol entry · notes paraphrased from cited sources, quoted excerpts copied from the transcript they link to. Not medical advice. Not affiliated with, endorsed by, or reviewed by anyone listed. How this works.