aight guys one of my friends runs track and he was thinking bout using some gear and came and asked me what he should take...i dont no really bout aas for speed so if yall could help me out and let me no what yall think he should take or stack one or the other....hes mainly a short disstance speed runner(100/200 and 400 meter runner) just to let yall no that if that info is needed here are his stats
5 11 180lbs 12%bf
thanks