Why is whey protein good for athletes and people who exercise?
Whey protein is a high quality, complete protein, with all the essential amino acids. Whey protein is also the richest known source of naturally occurring branched chain amino acids (leucine, isoleucine and valine). The body requires higher amounts of branched chain amino acids during and following exercise as they are taken up directly by the skeletal muscles unlike other amino acids which are first metabolized by the liver. Low BCAA levels contribute to fatigue. They are best replaced in one-hour or less following exercise or participation in a competitive event. Many athletes consume a whey beverage both before and immediately after exercise or an event to help repair and rebuild lean muscle tissue.