Im waiting till I feel im ready. Its ur body u do as u please but dont be suprised when something bad happens and u blam it on the juice because u really wernt prepaired for it. But doing them young also doesnt mean u are going to get sides either. Its up to u, just make sure u know what ur taking and u know how to use it. As of right now I dont think ur ready because u just tried to do a deca only cycle.