Whey Protein

Milk is the source of whey protein. During the making of cheese, the liquid separates from the curds. Although it contains lactose, a milk sugar that many people have found difficult to digest, it is also high in protein.

Whey protein isolate has extremely little lactose compared to whey protein concentrate since much of this milk sugar is lost during processing. Whey is fast to digest and rich in branched-chain amino acids (BCAAs). One of these BCAAs, leucine, is essential for promoting muscle development and recovery during resistance and muscular endurance. Amino acids are available for muscle protein synthesis (MPS), or the growth of new muscle, once they have been digested and absorbed into your bloodstream. Studies show that whey protein can help athletes in recovering from strenuous exercise and increase muscular strength in response to strength training. In one research of young men, whey protein boosted MPS after resistance exercise by 132% more than casein protein and by 31% more than soy protein.