SizeVital » defines the man at the time of forming the fetus, and is the cause of the male reproductive organs. Hence his vital intervention in the formation of the male body, being mostly a participant in the development during puberty, the growth of pubic hair. It participates in the formation and absorption of calcium from the bones of the body, also in muscle formation . It is what causes the thick texture in men. It also helps the recovery in the muscles after the exercises, additionally provides the energy to perform physical activities. It favors the production and absorption of insulin in the body, helping to avoid high levels of blood sugar. In the sexual part it has several functions, the primordial one is the sexual appetite in the man, as well as the virility in the same. Another sexual function is the erection of the male member. This hormone creates all the elements for an erection. Blood flow, excitement, enzymes and hormones, sperm, etc.