Instructions
Attach a double row handle to the cable machine and sit down with your feet against the supports and your knees slightly bent. Grasp the handle with both hands. Sit up straight with your arms out in front. Pull the handle in towards your waist. As you pull the handle towards you, focus on squeezing your shoulder blade. With control, bring the handle back to the start position. Repeat for the desired number of repetitions.
Tips
You can allow your shoulder to come forward at the start of the movement, as long as you can bring your shoulder back as you pull the handle in towards you.