Applied Nutrition Lean Mass Gainer is a product that supports weight gain and muscle building. It contains a powerful formula that combines fast and slow absorbing proteins to provide the body with the necessary proteins for a long time. Thus, it helps in promoting muscle growth and regeneration for a longer period. The product also contains a high amount of calories that help in gaining weight, building muscles, and making up for the bodys energy needs. This means that it can be used as part of a diet specifically designed to gain weight and improve muscle composition. Features of Applied Nutrition Critical Mass Lean Mass Gainz It contains a high amount of protein. Low glycemic protein. It contains important fatty acids such as Omega3 and Omega6. High in calories to provide the energy needed for exercise. Weight gain and muscle. Fortified with glutamine, HMB, leucine, and creatine. Chromium fortified. Provides the energy needed for exercise.