• Use a rope attachment and set the cable all the way to the top.
    Walk a few steps forward then fall into a kneeling position.
    Push your hips back and flex your abs, then push hips forward until in the starting position.
  • Set up the Smith machine bar at an appropriate height.
    Lie on your back beneath the bar, gripping it with your hands.
    Engage your core, lift your upper body toward the bar, and exhale.
    Lower your upper body back down in a controlled manner, inhaling.
  • Start by lying flat on your back with your feet flat on the floor and your knees bent.
    Hold a dumbbell over your clavicle.
    Engage your core muscles and lift your torso off the floor until your shoulders are a few inches off the ground.
    Lower yourself back down to the starting position, but avoid resting completely on the floor between reps.
  • Start by lying flat on your back on a ball with your feet flat on the floor and your knees bent.
    Engage your core muscles and flex your spine until you feel your abs contract.