Full wheel pose, otherwise known as the backbend, is a powerful yoga posture that stretches the whole front body and strengthens the arms, wrists, legs, butt and abs. Because it is an inversion, it increases energy and improves circulation. Despite its aesthetic simplicity, there is actually quite a bit going on in the pose which is why it can be tough to nail down. If you find yourself in this boat, here are four ways to improve your backbend.