Andrew Huberman· PhD
I always do one or the other it's rare that I ever do any kind of physical training without some caffeine first and I do my physical training typically in the early part of the day so that's fine doesn't interfere with my sleep I might do a hike without caffeine but if I'm in a weight trainer I'm going to run I tend to drink coffee beforehand or have yerba mate or if I occasionally meaning about once every third sometimes every other but usually about every third workout I'll take 300 milligrams of alpha GPC maybe occasionally maybe every third or fourth workout and these are resistance workouts mind you not running I'll take 500 milligrams of l-tyrosine or more typically 500 milligrams of phenol ethylamine and very very rarely maybe once every two or three months I might stack all of those things together prior to a workout