1. Lay on the floor as if you were doing regular crunches. Starting at your waist, turn your legs completely to the left side. Place your hands behind your head for support.

2. Lift your head up slightly off the ground as if you were doing a regular crunch.

3. Lower your head back down so it almost touches the ground. After desired number of reps is achieved, repeat exercise on other side.

Tip: To avoid bending your neck forward and straining it, try keeping your eyes on the ceiling while doing the crunches.