It's called PCT (post-cycle therapy) and any steroid bro worth his salt will be doing that. It's not optional. They take tamoxifen or clomid after running a cycle so they don't get the horrible estrogenic side effects (but still do sometimes). I've been going to the gym for 8 weeks now. Not doing the steroid route but I'm looking & feeling pretty damn good for a natural 35-year old who barely diets.