Whey Protein is essential for athletes looking to increase lean mass and lose fat. Athletes need more protein in their diet, and as stated by the International Society of Sport Nutrition, more than twice the recommended daily allowance. Whey protein contains ALL essential amino acids, making it a complete protein and is also very high in Branch Chain Amino Acids (BCAA). The BCAA's Leucine, Valine and Isoleucine have been shown in studies to help people build lean mass and burn fat. Whey protein helps you maintain healthy immune system by increasing the levels of glutathione in the body. Glutathione is an anti-oxidant required for a healthy immune system. Exercise and resistance training may reduce glutathione levels. Thus, whey protein might also keep you healthy!