1. Go in to a Downward Dog pose with your hands and your feet on the floor and your butt up towards the sky, keep your arms and legs as straight as you can and press your head in between your arms and push down with your chest towards the floor.
Hold the pose for a couple seconds. Now push your hips towards the floor and dive with your head up between your arms and towards the ceiling (this is called a Up Dog or a Cobra pose). Hold it for a couple seconds and start alternating a few times between the two poses. Go back and forth between the poses 5-10 times.