I've ran numerous cycles of phs superdrol, m1a, tren, epi when I was 22-27 years old sometimes I wouldn't cycle off for months at a time and I have 2 strong healthy active sons I even got my sperm checked before the wife and I was going to start having kids and everything was fine but it turns out my sperm is a lil slower then normal the dr said that's good if you want sons because male sperm cells are slower then female whatever the case it worked for me