First you bend to the right, moving circulation from right to left. Then you bend to the left, reversing the circulation. In the beginning you are struggling just for good form. Over time, as the body improves, you will be able to deepen the posture and therefore move even more blood circulation to each side of the body. When doing this correctly you improve and strengthen every muscle in the body’s core, especially in the abdomen; increase the flexibility of the spine; correct bad posture; promote proper kidney function; and help to cure enlargement of the liver and spleen. It increases the flexibility and strength of the rectus abdominus, latissmus dorsi, oblique, deltoid and trapezius muscles. Half Moon also firms and trims the waistline, hips, abdomen, buttocks and thighs.