What I found that works for me is a broom or mop-------stand streight with it over your head holding with both hands appx 18 inches apart; raise and lower behind your head appx 20 to 50 times depending on how you feel. This strengthens the shoulder and back musles...also helps support posture. Might have to start with only 10 to 15 times but work up to more. It is more benefical if eventually finding something a bit heaver or with weights. Currently 104 degrees in Texas.