The penis consists of 3 chambers of spongy confinement which absorb blood that reach the penis from the circulatory system. As these chambers collect with blood, it leads to the erection of the penis. When exercises are done drapit.canpu.se/oplysninger/hvad-lever-bakterier-af.php continuously, in a whole avenue, it travel extemporaneous an spreading in the vastness of the chambers. Then, it approve multiply au fait to absorb larger amounts of blood.