Extended Leg Pose Prevent Back Pain Stretches :hamstrings; strengthens abs Lie faceup with knees bent, feet on floor; take 3 deep breaths. a. Exhale and hug left knee to chest. b. Inhaling, extend left leg over hip. Exhaling, hug it in. Do 3 reps. On fourth rep, keep leg up and circle ankle four times in each direction. ·Hug knee in; lower foot. Switch sides; repeat. Exhale and hug both knees to chest for 3 breaths.