The creatine is used by all the human body because it travels by the blood stream. The heart and the muscles are the main parts that use creatine cells. Most of the creatine production will be stored in the skeletal muscle because these muscles need a lot of energy and they need it quickly. The body produces about two grams of creatine per day. Only 90 to 95 percent of the human creatine production will travel in the blood stream. The five to ten percent that is not used is lost.