10: Hanging Knee Raises on a Captain's Chair 9: The Plank Pose 8: Stability Ball Crunches 7: Stability Ball Piques / Straight Leg Roll - Ins 6: Swiss Ball Exchange between the Feet and Hands 5: Reebok
Core Board Twisting Knee Raises 4: Medicine Ball Russian Twists 3:
Moving Side Planks 2: Decline
Reverse Crunches on a Board 1: Bicycle Crunches