Casein best provides protein for the human body. Twenty grams of casein protein within two hours of working out is the most effective (Duvall). The protein in casein helps muscles grow larger and has a steady nutritional support for the body. This type of protein has a longer refuel point, and helps promote muscle hypertrophy and enhance great gains in strength (McLellan). This protein would best be used for a meal replacer because it helps fuel the body longer than whey and soy proteins. These two proteins are usually consumed right after intense workouts, to send amino acids from the protein straight to the worked