Whey blends such as Applied Nutrition Critical Whey and Naughty Boy Advanced Whey are the everyday choice for a shake. Isolates such as BioTechUSA Iso Whey Zero and Applied Nutrition ISO-XP are filtered further, so they usually carry less lactose and fat. Clear whey mixes like a fruit squash rather than a milkshake, and casein is a slower-digesting milk protein that many people take in the evening.
