I feel your pain. I originally lost weight and trained up mostly using body weight squats and intense interval training in my 20's (25 to 28 i went from 350ish to 150ish (lbs, not kgs, i think you're not from the us.) Now i think about rsawr doing her routine at 28 and wish and pray for a knee day like that.no, i think i have to habe the MRI b 4 they sort out any physical training. its so frustraiting not useiing your back or shoulder. you don't realise just how much you depend on them till u can't use them