Increases Strength. Improves ATP Production. Enhances Muscle Growth. 99.9% pure micronized Creatine Monohydrate. Creatine is a natural substance produced by the body and found in various foods. During exercise creatine helps regenerate ATP, which is responsible for all muscle contractions. During high intensity exercise, the ATP demand in muscles increases. Supplementing with creatine allows your phosphocreatine stores to replenish faster, allowing muscle contractions to continue at peak levels.