The pelvic tilt exercise is composed of 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 muscles. This allows the small of your back to lower itself to the floor.
Hold for 5 to 15 seconds. Release the belly muscles.
Repeat this exercise 5 times.