Andrew Huberman· PhD
if I were to take a pre-workout energy drink or I took say 300 milligrams of alpha GPC and 500 milligrams of phenylethylamine and perhaps even 500 milligrams of l-tyrosine and perhaps did that alongside the caffeine in the Yerba mate then yes absolutely I really like those workouts I could be like a laser in terms of focus I could exert even more effort put on some music and I could achieve even better performance