So check this, one of my friends is 17, and is hell bent on taking Afro(Methyltestosterone). Whenever he says "I want that Afro now man" I answer "I guess you dotn want to grow anymore". He says he only wants to take it maybe once a month or when he is about to get into the ring(we're both amateur Thaiboxers), but I know that wont happen. How can I convince him to not take that crap?