A man or boy with normal testosterone levels who takes steroids, or testosterone itself, to increase strength or muscle mass may indeed achieve these things, BUT he may also damage his body in the process. Excess testosterone causes an increase in cholesterol, and may cause a profusion of red blood cells called "polycythemia," in which the individual's skin turns pink, or even red. Most mortifying of all, the body may react to excess testosterone by turning it into estrogen. In a man, this will cause feminine fat deposition in the hips and butt - and gynecomastia, breast growth - what weightlifters quaintly refer to as "bitch tits." Among dancers, this effect could only be desireable if you want to join the Trocaderos. Gynecomastia is irreversible, and requires a mastectomy to fix.[/i]