The upper chest & arm muscles come back pretty fast once the Dr gives you a go ahead to exercise them with weights. Might as well get some upper chest weight lifting in every other day until surgery, my Dr had no problem with that.

If you're right handed, you can adjust the mouse for left handers. I did that, but I still preferred to use my right hand while it was immobilized and put it in front of the keyboard. Hell, I haven't even adjusted the mouse back to right handers, and it throws the monitoring software off in that they think I'm left handed. Heh.