Branched-chain amino acids, or BCAA, are essential nutrients obtained from foods rich in protein. These amino acids include leucine, isoleucine, and valine. The use of BCAAs have been a popular practice for body builders since it improves exercise performance and reduce protein and muscle breakdown during intense exercise. Also, it helps prevent fatigue and improve concentration. As of the medica field, BCAAs are used to treat Amyotrophic Lateral Sclerosis, Tardive dyskinesia, McArdle's disease, and many others. BCAA is categorized under Amino Acids.