Both the muscular growth and metabolism are regulated by the chemical mechanism of the male sex hormone testosterone. Due to this fact steroids are derived from these hormone namely testosterone. It is important to note that both catabolic and anabolic steroids adhere to the same chemical mechanism. This is where they attach themselves to a cell membrane receptor. Once they bind themselves to the cell membrane a receptor complex is activated which causes the hormone to enter into the nucleus. Once the hormone penetrates the nucleus it goes further and attaches itself on the DNA response elements. This therefore implies that the hormone operates at the genetic level. This approach is used by both artificial and natural testosterone to trigger the release of exceptional proteins in the cells. When this happens a person is able to experience significant muscle progress as ...

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