Fast-digesting whey means it is emptied from the stomach quickly, resulting in a rapid and large increase in plasma amino acids. This translates into a quick but transient increase in protein synthesis, while protein breakdown is not affected. Whey also has higher levels of leucine, a potent amino acid that stimulates protein synthesis. Whey protein is superior at augmenting protein synthesis rapidly, but this positive effect is short-lived. Consuming repeated doses of whey allows for sustained high levels of blood amino acids and repeated bursts of protein synthesis that provide superior effects on muscle protein balance. For More Details infographic examples
