Instructions
Stand with your left side next to a cable machine (you can also tie a resistance band to a wall). You should be side by side with the cable or band. Take the handle in your left hand.
Stand tall with a tight core and flat back. Your feet will be shoulder width apart. Clasp the handle with both hands. Begin by pushing the handle out in front of you.
Feel the tension in your abs and obliques. Hold this position for the prescribed amount of time. Slowly bring the handle back towards your body.