Dr. Sears' Zone Protein Powder – 12 oz.Why do I need additional protein in my diet? \n \nProteins are the main building blocks of the body and make muscles, tendons, organs and skin. Proteins are also used to make enzymes, hormones and neurotransmitters. \n \nZone Protein Powder is an all natural source of protein thats flavor neutral and designed to be added to soups, smoothies, yogurt, dressings, stews, and oatmeal to bring up the protein levels in your meals and snacks to match the Zone