Creatine is widely used as a dietary supplement to enhance athletic performance, particularly in high-intensity, short-duration activities like weightlifting, sprinting, and other explosive sports. It works by increasing the availability of phosphocreatine in muscles, which helps regenerate ATP, the primary energy source for muscle contractions. This leads to improved strength, power, and muscle mass over time. Additionally, creatine is being studied for its potential benefits in neurological conditions, such as Parkinson's disease, Alzheimer's disease, and depression, due to its role in brain energy metabolism. It is also used in medical settings to treat certain muscle and metabolic disorders, such as creatine deficiency syndromes. Its safety and efficacy have been well-documented, making it one of the most researched and trusted supplements in sports and health.