Do these exercises, from physical therapist Renée Garrison, for five minutes a day to help ward off low back pain.
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Lie facedown. Rest on your forearms, palms flat on the floor; tuck your toes. Push up off the floor, rising up onto your toes, elbows, and forearms so your back is in a straight line from head to heels.
Hold for 30 seconds, eventually working up to 2 minutes.
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Straight leg raise
Lie on your back with your left knee bent and left foot on the floor; keep your right leg straight.
Tighten your ab muscles and raise your right leg about 6 inches off the floor; hold for 5 seconds. Slowly lower leg back down, keeping your hips still.
Do 10 to 15 reps, then switch legs and repeat.
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Opposite arm & leg lift
Get down on all fours with hands under shoulders and knees under hips. Reach your right arm forward; at the same time, stretch your left leg back.
Hold for 5 seconds, then release and repeat using the left arm and right leg; that's one rep. Do 10 to 15 reps.