Knees-to-chest pose, or apanasana in Sanskrit, is a supine pose wherein one or both knees are drawn in toward the chest. Apana is the body's downward moving vayu energy. This pose helps apana to flow in its natural direction, relieving gas and constipation.

Lie on your back and bending your knees place your feet on the floor. Inhale lifting the feet off the floor drawing the knees towards your body. Wrap your hands or forearms around the shins. Exhale and squeeze the knees to be pressed against the chest.