A creatine-based pre-workout supplement that helps increase endurance and aids in building muscle.Mass Impact® supports muscle building for performance athletes as well as those looking to prevent muscle breakdown. With creatine as a key ingredient, Mass Impact® helps maintain ATP levels for cellular energy and promotes muscle mass, volume and strength. Formulated to support rehydration, energy replenishment, and muscle recovery. Other amino acids help to optimize fat cell and muscle tissue interactions to support lean body mass.