Muscles are important components of the human body. They are necessary for our harmony development and hight quality life. Elastic muscles make your body not only hard, powerful, but also beautiful. Athletes and professional bodybuilders decide to buy testosterone cypionate after they find out what great effects it brings to their body. But before you start using steroids for sale it you need to understand the importance of some special techniques known as post cycle therapy to avoid some unwanted side effects and to avoid any damage to your system.
The second theory is similar and is known as "evolutionary neuroandrogenic (ENA) theory of male aggression".   Testosterone and other androgens have evolved to masculinize a brain in order to be competitive even to the point of risking harm to the person and others. By doing so, individuals with masculinized brains as a result of pre-natal and adult life testosterone and androgens enhance their resource acquiring abilities in order to survive, attract and copulate with mates as much as possible.  The masculinization of the brain is not just mediated by testosterone levels at the adult stage, but also testosterone exposure in the womb as a fetus. Higher pre-natal testosterone indicated by a low digit ratio as well as adult testosterone levels increased risk of fouls or aggression among male players in a soccer game.  Studies have also found higher pre-natal testosterone or lower digit ratio to be correlated with higher aggression in males.