Half Moon and Revolved Half Moon with Bell, Block and Wall! You can do this with or without the dumbbell. Pin a yoga block with your outer knee on the wall on its widest facet so that you have room to rotate. Move back and forth from Half Moon to Revolved Half Moon slowly and smoothly. These are also called hip airplanes. Keep pressing your outer knee into the block as you rotate your pelvis around the thigh bone of the supporting leg. Then challenge your balance by looking up to the ceiling in