There is SOME validity to this but not a huge lot
on bulking cycles I take 30mgs dbol + 3 caps ostazol m1mk before training, 20min out
on cutting cycles I take 30mgs anavar 20mgs winstrol + 3 caps cardazol before training, 20min out
i get BETTER workouts and better focus game, pumps and energy and of course results are better