Ask any guy what his workout goals are and increased strength is almost always on the wish list. Often, to help get there quicker, guys will supplement using whey protein. In a Massachusetts study, researchers found that casein actually doubled the effect that whey protein had on legs, chest, and shoulder strength results. Researchers believe the reason for the significant difference was because of casein’s well-known anti-catabolic abilities. The next time you’re thinking of having a late-night snack, make it a casein shake.