Muscle Groups Worked in This Exercise:  Obliques and Rectus Abdominis

Preparation: Roll on top of your stability ball in a prone position and roll your body out with your hands on the floor and your knees bent and resting on top of the ball along with your feet, in a coiled position.

Breathing:  Breath out on the contraction of the muscle and breath back in on the way back to the start position.

Execution: While your hands remain stable and balanced on the floor, begin to roll and rotate with your lower body to one side and then back to the start position and repeat alternating between both sides.

Comments: Focus on keeping your core muscles tight and focus on squeezing them in as you rotate through the exercise movement.