Easy to mix and with a delicious chocolately taste. Whey is ideal for adults wishing to increase their daily intake of protein. A natural by-product of milk, whey is a popular nutritional supplement used by bodybuilders, as protein contributes to the maintenance and growth of muscle mass in the body. Protein forms the structure of all cells and tissues in the body, including muscle tissue, internal organs, tendons, skin, hair and nails. Protein also contributes to the maintenance of normal bones.