This exercise is designed to be performed with the Body-Solid Ab Wheel.
Begin with one knee on the ground and the other leg extended to the side, with the foot flat on the floor.
Roll the ab roller straight out in front of the body until the chest is nearly touching the ground.
The weight on the extended leg should shift forward until you are on the ball of the foot.
Come back up to starting position. After completing reps, switch legs.