I am 18 and I know that should not take steriods now. But I have a dream to become a proffesional bodybuilder, and I just want to know when should I start to take steriods for competing eventually. I repeat, I do not want to start using steriods for just looking good, I want to use it for competing purposes but everyone says that I shouldn't cycle at age 18. When should I start then for competitive bodybuilding?