> Of all the amino acids leucine, isoleucine and valine = BCAA are defined as essential and those that the human body is not able to produce independently and must be obtained externally. BCAA acids are used for metabolism and energy directly in the muscle and may improve athletic performance, reduce muscle breakdown following exertion and allow building blocks to be available for building and repairing the muscle. Of the three BCAA acids, the most important is leucine. Leucine serves as an essential building block in the structure of the body's proteins and in an amount of 3 grams per serving is a trigger for activating processes that encourage the building of muscle mass
