This is an intensified ab exercise on the ball.

Anleitung

  1. Sit straight up on the exercise ball, and roll your buttocks forward until your back is resting around the ball. Cross both arms at your chest and have your hands resting on your shoulders. Your feet should both be flat on the floor.

  2. Inhale and crunch forward, rolling your buttocks forward on the ball, and bending at the knees. Hold for 2 seconds and return to start position to complete 1 rep.