Eggs are chock full of amino acids and the combo of protein and fat helps you feel full and avoid overeating. "The protein in the egg helps to build muscle and burn fat which tones your physique," says Ilyse Schapiro, a registered dietitian and owner of a private nutrition practice specializing in weight loss in New York City. And you don't have to save them for breakfast. Eggs are incredibly versatile and can be added to almost any meal or snack. Try any (or all) of these 20 quick and easy ways to cook eggs.