Creatine (C) is a very common supplement among athletes.
Many studies have shown its ergogenic effect by increasing the reserves of phosphocreatine (PC) at the muscular level, and therefore of ATP.
ATP is the energy molecule that the muscle uses during high intensity efforts and short duration, so supplementation with creatine (C) increases the energy supply to the muscles, in addition to facilitating the resynthesis of phosphocreatine.