Video Library Dr B’s Back ReLever – For Neck and Shoulder Pain Dr B’s Back ReLever – For Lower Back Pain and Buttocks Dr B’s Back ReLever – Pain in Upper Back Tutorial Dr B’s Back ReLever – For Calf Muscle Pain Relief Dr B’s Back ReLever – For Upper Back Muscle Pain Dr B’s Back ReLever – For Hamstring Muscle Pain Dr. B’s Back ReLever instructional video by Personal Strength & Fitness Trainer: Greg Penney