Both weight loss and recovery from repetitive stress injuries involve a change in life style. Both require that the person give up the way that they're used to doing (or not doing things) and do something different or change their views about their body. It's interesting. Neither is a real recovery in the 'short term' (read anything less than a month or two), and neither allows just going back to being who and what you used to be. Both require that one small, "good" choices every day and all the time.
RSI is about work addiction, about doing things until something breaks. And then choosing to change that, add some maintenance and actually taking care of the thing that insults one by breaking. It nearly requires that one add some aerobics and some weight lifting and strengthening, i.e. to get off ones butt and be active. Just as weight loss really does. It requires that one admit that there's a problem. Hee.
It's just interesting seeing just how closely the two are actually linked.