Rear Delt Fly - Machine
Grip top bar (palms down). Sit in good body alignment (abs tight, chest up, back straight). Squeeze together (retract) shoulder blades. Keep elbows and forearms parallel to the floor throughout entire exercise. In a controlled motion, keeping elbows up, pull bars out and back as far as possible without compromising form. While maintaining the controlled motion, return to starting position. Do not allow muscles to relax before the next repetition.