Underhand Pulldown
Preparation
Grasp cable bar with an underhand shoulder width grip. Sit with thighs under supports.
Execution
Pull down cable bar to upper chest. Keep the back straight. Arch the chest as the bar is being pulled down. Do not lean back. Return until arms are almost straight. Repeat.
Comments
Never look straight up. Look straight ahead or slightly upwards. Do not straighten the arms at the extended arm position. By not locking them out the tension stays on the back muscles.