Micellar Casein Night Time Protein, Vanilla Cream, 900 Gm - Applied NutritionApplied Nutrition Micellar Casein Night Time Protein 100% Casein Protein is essential for muscle refueling during sleep when eating or drinking is not feasible. During sleep, the body can enter a state where it may break down muscle tissue, negatively affecting muscle recovery and performance. 100% Casein Protein is digested slowly over up to seven hours, providing muscles with the necessary amino acids for muscle tissue synthesis, repair, and growth.