Studies reveal that creatine supplements can significantly increase exercise and athletic performance by delaying the development of fatigue. Creatine does not alter muscle size or structure, but improves the ability to maintain maximal performance and helps rebuild lean muscle mass. Pure creatine monohydrate, a precursor to creatine phosphate, is necessary to fuel muscle contractions.^◆ Creatine plays a vital role in the production of ATP (adenosine triphosphate), the primary compound which converts food into energy. When high concentrations of creatine are present, the body can quickly release ATP to sustain high-powered muscle contractions.