Creatine enhances the production of ATP (adenosine triphosphate), the primary energy carrier in cells, which improves strength, power, and high-intensity exercise performance. It also supports muscle growth by increasing water content in muscle cells and may help with faster recovery after intense workouts. Numerous studies have confirmed its efficacy in improving muscle mass and exercise performance.
Reference: Kreider RB, Kalman DS, Antonio J, Ziegenfuss TN, Wildman R, Collins R, et al. "International Society of Sports Nutrition position stand: safety and efficacy of creatine supplementation in exercise, sport, and medicine." Journal of the International Society of Sports Nutrition, 2017.