Lets flex our science and biology muscles for a sec. Because if increasing muscle mass is your fitness goal, the BCAA class is in. Branched-chain amino acids (BCAAs) are essential amino acids that our bodies cannot produce on our own. Yet, theyre necessary to increase muscle protein synthesis, which leads to muscle growth. BCAA from BodyTech brand contains all three essential branched-chain amino acids, with a higher ratio of leucine to create the pathway to muscle protein synthesis. Yeah, science is cool.