The pelvic tilt exercise uses subtle motions that build strength by isolating, tightening, and holding muscle positions. To do a pelvic tilt:

• Lie on your back with your knees bent and your arms at your sides with your hands palm-side down.
• Take several deep breaths. Breathe in and out slowly.
• Tighten your belly and buttocks muscles. This allows the small of your back to lower itself to the floor.
• Hold for 5 to 10 seconds. Release the muscles.
• Repeat this exercise 5 times.