I used some Deca when rehabilitating a pec tear surgery. Problem here is that alot of the pain that was present before the Deca seemed to disappear once the Deca kicked in. I felt 100% better and the pulling, burning, tight feeling I had post surgery quickly started fading. This gave me a false since of confidence( I hadnt trained AT ALL for 8-10 weeks and I was eager to get back in the gym)and i started lifting too freely too quick. At this time I was doing nothing more for chest other than benches with the bar and 20pd pec decs. Long story short, I ended up tearing again a couple weeks into my traing(really bad this time)....lost 80% of clavicular head, 60% of sternal head. And i had this tear doing single-arm tricep cable kickbacks with like 15 pds. I swear the quick build up of the surrounding muscles after that lay off really contributed to me having to much confidence about were I was in my rehab. Fuck deca...Good for nagging joint/tendon(tore mine at the pec/bi tendon insertion) issues but sometimes we gotta realize we our masking the discomfort and not necessarily fixing the problem. Shoulda used GH instead dammit