HMB & arginine inhibit in parallel two independent groups of catabolic enzymes which provides a double protection to muscle proteins. Arginine deficiency potently activates & its sufficient amount inhibits catabolic processes. Glutamine inhibits catabolism related to arginine deficiency & to obtaining amino acids from muscles for the needs of other tissues by the body. Leucine isoleucine & valine are amino acids which have the highest share in the muscle tissue which are most