BCAA [2:1:1] formula can help limit lean muscle loss as well as increase visceral fat loss. Visceral fat is the deadly fat that accumulates around your central organs. BCAA refers to three amino acids: Leucine, lsoleucine, and valine. For people with low dietary protein intake, BCAA supplementation can promote muscle protein synthesis and increase muscle growth over time. Supplementation can also be used to prevent fatigue in athletes. Leucine plays in important role in muscle protein synthesis, while isoleucine induces glucose uptake into cells.Valine is vital for everyday body functions as well as maintaining muscle and regulation of the immune system. Supplementing BCAA prevents a serum decline which occurs during exercise. A serum decline causes a tryptophan influx into the brain which causes fatigue.