Attach a bar handle to the cable. Sit on the platform with your knees slightly bent. Lean forward and grasp the handle with your hands about shoulder width apart.
Sit erect and pull the handle to your neck, keeping your upper arms perpendicular to your trunck, elbows out. Do not lean back, keep your torso vertical.
At the end press your shoulder blades together. Keep this position for a mometn and return your arms to the starting position. Do not lean forward, keep your torso vertical.