are synthetic coumpounds formulated to be like the male sex hormone testosterone. Many athletes use male and female alike, such as body builders , weightlifters, baseball players, football players, swimmers, and runners. They do so because they mistakenly believe that they will gain strength and size. In a male testosterone is released by the leydig cells in the testes. The testosterone has two main functions androgenic and anabolic. Androgenic is the development of male sex characteristics. Anabolic is the development of muscle tissue. ....