HOW: Lay on your stomach on a bench or table with an arm hanging down at your side. Use your shoulder blade muscles and act like you are pulling weight off of the ground bringing your elbow up to your side, return to the...

HOW: Lay on your stomach on a bench or table with an arm hanging down at your side. Keep your elbow straight and use your shoulder blade muscles to bring your arm up and back staying at your side with your palm facing in....

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