Man of Honour
Ummmm...thoughts? LOL
Are these people bicep monkeys by any chance? That's maybe unfair but it's the first thought that popped into my head.
"More than what?" would be the next question, what's the ideal amount for training purposes? Is it a sole function of onanism that causes this problem of overtraining? What about sex with a partner?
I could keep making up sillier and sillier questions regarding this but in essence I doubt that it is liable to be a problem for almost anyone.