1. Stand tall and face a wall.
2. Place both hands on the wall with your palms flat. Your arms should be straight and at shoulder level.
3. Pull in your belly. Imagine pulling your belly button back toward your spine.
4. Step your feet back about 12 inches from the wall. Keep your body in a straight line and your shoulders relaxed.
5. Hold for 3 to 5 seconds. Remember to keep breathing.
6. Step forward to the starting position and take a deep breath.
7. Repeat 8 to 12 times.

You can make this exercise harder by stepping back farther. Remember to step back just far enough to feel a gentle challenge in your belly muscles.