COR-Performance Creatine. Increase Strength. Promotes Lean Muscle Mass. Micronized Creatine. Creatine has been clinically studied for its positive effects on strength and performance. Supplementing with creatine provides your muscles with an extra boost of energy for intense exercise, helping replenish the body's ATP levels. Higher ATP levels promote faster recovery during anaerobic exercise. Choose COR-Performance Creatine for added ATP energy, strength, and lean muscle growth.