Branched Chain Amino Acids (BCAA) are composed of the three essential amino acids Leucine, Isoleucine, and Valine. The BCAAs make up 1/3 of total muscle protein and thus, are very important for muscle growth and muscle repair. Athletes and body builders use Branched Chain Amino Acid supplements to maintain muscular strength and endurance, even after intense exercise and physical stress. visit us http://www.tasmanhealth.co.nz/now-branched-chain-a mino-acids/ for more details!!