Originally Posted by Morelock

my only caution on supplementing (especially from big box stores like gnc/vit world/etc) is if you are going to be tested. I'd be very cautious taking anything that wasn't NSF certified nowadays... cross contamination is a real problem.

Agree Beta Al, Beet juice and creatine show (in many studies) actual improvement. So does baking soda, although it's pretty redundant to take baking soda and beet juice.

Examine.com is a great website/resource if anyone didn't know about it. Easy search bar that brings up most of the studies done on whatever supplement you search for.