Plank Ab Exercise

1. Lie face down on mat resting on the forearms.

2. Push off the floor, raising up onto toes and resting on the elbows.

3. Keep your back flat, in a straight line from head to heels.

4. Tilt your pelvis and contract your abdominals to prevent your rear end from sticking up in the air.

5. Hold for 40 - 60 seconds, lower and repeat for 3-5 more.