Hi. new to board but have been a long time fan of this site. 42 yrs. old and coming off a slight shoulder strain or maybe rotator cuff issue. 3 wks. of rest and predisone. Just doing some leg work. Very frustating. Any input on how hard I should push or certain exercises to avoid would be welcome. Injury caused from using a ice mutt at work, shoveling snow and doing hang cleans. thanks.