If you have to sit for prolonged periods of time, for example at the movies or on an airplane, sit with your leg crossed. Crossing your legs uses your hip and back muscles, so you are keeping them active even while in a position prone to cause back pain. Alternate the direction of your leg crosses to utilize both sets of muscles on the left and right sides. Having proper form while exercising will reduce back pain by a noticeable amount. Speak with your doctor or physical therapist about stretching and muscle strengthening techniques that will encourage flexibility and strength

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