I used grams of gear for a long time and they are not like permanently small. I really don't think it's something that you have to really worry about. Without ever doing hcg mine have came back to near full-size (or maybe I forgot how big they were before lol) even without ever coming off. I'm sure hcg would fully recover them. Not something I really care about. Doesn't hurt me.Testicular atraphy is temporary and reversible for the most part. As long as you weren't on grams of gear for longer durations of time.