Lie flat on your back. Raise your legs so your knees are bent at a 90-degree angle; keep your feet flat and toes pointed toward the ceiling.
Place your right ankle behind your left knee. With your left hand on the right knee, gently pull your legs to the left side. Turn your head to the right and keep your right arm extended out on the mat.
Your torso should lift slightly off the mat. Try to get your right foot flat on the mat (or as close to it as possible), with the outer side of your left foot resting against the floor.
Hold this stretch for 90 seconds to two minutes before coming back to center and switching sides.