The unrivaled formula and ingredient technology of Weider's Muscle Builder Advanced is designed to enhance both your physical and mental performance. Whether you are a gym goer, an athlete, or both, MUSCLE BUILDER ADVANCED will help you achieve your goals. A balanced macronutrient profile and energy content, absorbed efficiently over time, supports lean muscle growth and recovery as well as healthy mental performance. This product uses the best form of protein the body can assimilate - micellar casein. The time-released micellar casein matrix + additional bonded-glutamine are the hallmarks to the MUSCLE BUILDER ADVANCED formula. Micellar Casein is a slow digesting and rich protein source that continues to feed muscles long after fast digesting protein has dropped off. Micellar Casein is known to sustain steady amino acid elevation for up to 7 hours. It thus ensures a positive overall protein balance that prevents muscle breakdown and keeps the body in anabolic state for optimal muscle growth and recovery.