I have been battling a rotator cuff injury for about the last year. I'll take a couple weeks off and it seams to heal, and if I don't work too much upper body in a short period of time I'm decent. I also can't sleep on it. If I go really hard in the gym it will always bother me. It bothers me alot on chest day. So much much that my opposite side pec is out growing the other.
I have often wandered if some careful workout planning and some hgh would help this heal.