Muscle Feast Premium Protein Blend is a combination of whey protein isolate, hydrolyzed whey protein, and micellar casein mixed in one excellent product! By combining proteins with varying rates of digestion and absorption, it will optimize muscle protein synthesis. For example, whey isolate ingestion leads to a rapid spike in amino acid levels, which increases muscle protein synthesis more than micellar casein. On the other hand, micellar casein tends to have a more anticatabolic effect than whey isolates and prolongs muscle protein synthesis to a greater extent. In theory, the combination of whey protein isolate, hydrolyzed, and micellar casein means more significant increases in lean muscle mass and shorter recovery times compared to when ingested separately.