Whey protein, a form of protein that is manufactured from milk, is an excellent source of protein for people of all ages.hen whey protein is manufactured, the first step is to change milk into curds and whey. Once that happens, the whey is separated from the curds, after which it is processed into whey protein concentrate, whey protein isolate or hydrolyzed whey protein.
Watermelon lives up to its name big time. This colorful, refreshing fruit, with its dramatic light-and-dark-green rind and its juicy pinkish-red interior, is actually over 91 percent water, which makes it super low in calories: 1 cup of diced watermelon contains a mere 46 calories. Watermelon has almost no fat or protein. Most of the fruit's 46 calories come from carbs. At 11.63 grams per cup, primarily from natural sugars, carbs give watermelon its sweet taste.
Watermelon is a low-calorie food, containing only 46 calories per cup. According to the Mayo Clinic, it takes 3,500 calories to make a pound of body fat, so watermelon is not likely to contribute to weight gain. Because a cup of watermelon contains less than a gram of fat, it is also appropriate for a low-fat diet. Watermelon also contains 139 grams of water per cup along with a small amount of fiber, so it can help fill you up and make you less likely to eat other, higher-calorie foods included in the same meal.