Egg whites are a versatile low-calorie, fat-free, high-quality protein choice. For only 17 calories you get 4 g of protein per egg white — talk about lean protein! Egg whites can help you maintain strong bones, muscles, nails, and hair. Plus, all that protein will help you stay satisfied for hours after a meal. Egg whites can be eaten hard-boiled on their own, enjoyed as a topping for salad, or substituted for whole eggs in egg salad; they can also be used as the base of a vegetable omelet or in place of whole eggs in baked goods.