onates a phosphate group to ADP and it rapidly retransform to ATP, which is immediately available to the muscle to be used for a fuel for exercise.
             During brief explosive-type exercises, the energy supplied to rephosphorylate adenosine diphosphate (ADP) to adenosine triphosphate (ATP) is determined largely by the amount of phosphocreatine stored in the muscle. As phosphocreatine stores become depleted, performance is likely to rapidly deteriorate, due to the inability to resynthesize ATP at the rate required. "Since the availability of phosphocreatine stores in the muscle may significantly influence the amount of energy generated during brief periods of high intensity exercise, it has been hypothesized that increasing muscle creatine through creatine supplementation may increase the availability of phosphocreatine and allow for an accelerated rate of resynthesis of ATP during and following high intensity, short duration exercises(Kreider 1)." ATP is the primary source of fuel for muscular exercise. It is used before sugars (carbohydrates) and before fats. When muscles are used to lift weight, run or perform any type o!
             f work the ATP is broken down to ADP (adenosine diphosphate) and energy is released. The amount of ATP stored in the muscles will only fuel a maximum effort such as lifting a weight for 10 to 15 seconds. After that, the muscle must rely on Creatine Phosphate to restock its supply of ATP. Increasing the muscles supply of Creatine phosphate helps increase the rate in which the body can supply ATP. This
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