HOW Creatine WORKS
Muscle cells use Creatine to make a compound called phosphocreatine (PCr). PCr is used to form adenosine triphosphate (ATP), which provides energy in the body. PCr also buffers against lactate production and muscle fatigue during exercise. Thus, Creatine may increase both the force of muscle contraction (by boosting ATP levels) and the duration of anaerobic exercise.