Branched chain amino acids - leucine, isoleucine and valine, as a supplement without any additives, is the key foundation of any supplementation. The main indisputable advantage of BCAA's, through a series of complex metabolic processes, is increase of anabolism. Score one for the power sports. Thanks to the complex chain, from the chemical point of view, branched chain amino acids is also a solid portion of energy and a source of glycogen reconstruction. Score one for aerobic exercising. Leucine, isoleucine and valine are precursors to many chemicals and amino acids. Thus they effectively prevent catabolism in state being healthy, as well as during the disease, and enhance working of a number of systems such as immune system. Moreover leucine effectively helps to reduce excess body fat through more effective utilization of glucose and protein synthesis which increase thermogenesis.