Used primarily to enhance athletic performance and increase muscle mass. Commonly taken by athletes and bodybuilders to improve strength, power output, and recovery during high-intensity exercise. Supports energy production in muscle cells by increasing phosphocreatine stores, which helps regenerate ATP during short bursts of activity like sprinting or weightlifting. Also studied for potential cognitive benefits, especially under conditions of sleep deprivation or mental fatigue. Used as a dietary supplement in various forms, including powder, capsules, and chewable tablets.