Start by lying flat on your back. Bend your knees and position your feet hip-width apart, with your knees bent and your spine flat against the ground.
Lift up your right leg and bend it open to the right, placing your right ankle on top of your left knee. Lift your left foot off the ground and gently draw your left knee in toward your chest, looping your arms and clasping your hands around your left thigh to hold it in place. Keep your right foot flexed.
Hold for 20 seconds, or as long as feels good, then switch sides.