Nov 13 0 Edge of Bed. Low Back Towel Stretch (For Patient Exercise Guidance) Posted by Admin Checkout the full video here. This stretch will help you stretch your back by lying on the edge of the bed and hang your feet off the edge. Hold this position for up to 30 seconds to start, then add more time to your convenience. Feel like the stretch is not enough? Roll up a second bath towel to add more of a stretch. Recommend to do this stretch morning and night, if your back is constantly tight. Related stretches: Hip Flexor Stretch for your Low Back Leg Bent/Back Stretch