100% Casein - Slow Release Protein With Added Digestive Enzyme Blend Applied Nutrition’s 100% Casein Protein is vital to anybody wanting to refuel their muscles during sleep when it is impractical to consume food or drink. During this period your body can enter into starvation mode and may start to break down muscle tissue. This could have a negative impact on both muscle recovery and performance. As a result, Applied Nutrition’s 100% Casein Protein is digested slowly over a sustained period of time (up to seven hours), thus supplying your muscles with the amino acids required to synthesize muscle tissue, facilitating repair and growth. 100% Casein Protein hosts a complete Amino Acid profile and contains vital Branched Chain Amino Acids (BCAAs) which are the building blocks for new proteins. With minimal Fat and Carbohydrates, this product certainly compliments the desired goals of a calorie-controlled diet.