Forward Bend.

Stretches the backs of your thighs and your back
The Forward Bend is a perfect complement to the Wheel, as it brings your spine into the opposite position. Doing it while seated on the ball helps you to tip your pelvis forward as you bend.
A. Sit on the ball. Extend your legs, with your feet about hip-distance apart.
B. Exhale as you bend forward from your hips and slide your hands down your legs (to your feet, if possible). Try to keep your back long and flat. Hold for 1 minute, breathing normally. Inhale as you rise.