Start by lying on your stomach with your arm hanging straight down. Lift your arm to your side over a 2 second count until it is perpendicular with your torso, and then, slowly, lower your arm back to the starting position over a 4 second count. Repeat the movement 25 times to complete one set. Perform two sets on each side.
Courtesy of Craig Parsons, MS, PT and the Physical Therapy Network.
