What are Branched Chain Amino Acids? Branched Chain Amino Acids, (BCAAs) refer to three amino acids: Leucine, Isoleucine and Valine. Supplemeting with BCAAs may promote muscle protein synthesis and increase muscle growth overtime. It can also be used to prevent fatigue in athletes. Leucine plays and important role in muscle protein synthesis while Isoleucine induces glucose uptake into cells. When it comes to “Quality Amino Acids”, Corebolics is setting new standards. At Corebolics, there is a commitment to quality, which is why we use the all new Instant fermented branched chain amino acids from vegan sources. Use the product elite athletes have know about for years. Make sure you keep RE-CORE as a part of your daily year-round supplement program.