Perform this stretch to help restore your lumbar curvature and alleviate low back stiffness. Begin standing in a neutral position, feet shoulder width apart with thumbs or palms placed across the low back. Gently bend backwards, arching your low back, until a gentle stretch is obtained. Hold for 1-2 seconds, then return to neutral position. If low back or leg pain is noted, limit your backwards stretch to the point at which your pain begins. Repeat this stretch 10 times. If you are prone to falling or have balance issues, make sure to perform this stretch with a soft chair, bed or couch directly behind you in case you lose balance and need to sit suddenly.