HMB

HMB, or beta-hydroxy beta-methylbutyrate, is a compound made in the body and a metabolite of the essential amino acid leucine. Research has found that HMB decreases post-exertion muscle protein breakdown, increasing muscle size and strength when combined with resistance training. Supplementation with HMB is based on the theory that, as with glutamine, the body depletes its own reserves of HMB after intense exercise, leaving muscle tissue vulnerable to degradation.