Creatine is primarily used in exercise to enhance athletic performance and promote muscle recovery. It is a naturally occurring compound found in small amounts in certain foods and synthesized by the body. During high-intensity activities, creatine helps replenish ATP (adenosine triphosphate), the energy currency of cells, allowing for quicker bursts of energy. Additionally, creatine supports muscle hypertrophy by stimulating protein synthesis and reducing muscle breakdown after intense workouts. This supplementation can be especially beneficial for athletes involved in sports requiring explosive movements, such as weightlifting and sprinting.