alt="Legs" /> 5. Copy the. The hook-lying alternate legs exercise builds essential muscles to help strengthen your lower back and abdominal muscles. To do this exercise, start by lying on your back with your knees bent and your feet flat and hip width apart. Contract your abdominal muscles; bring the belly button down to the spine as you bring your. Alt-therapy: He's pulling your leg, but it relieves the pain. Andrew Bloch performs reflexive pattern therapy, which combines principles of physical therapy and acupuncture, on Teresa Luz. The Washington Post. By Danielle Douglas-Gabriel. Posted: 12/18/15, PM EST | Updated: on 12/18/ # Comments.