The receptive partner lies on his or her back. In order to achieve optimal alignment, the receptive partner's legs should be in the air with the knees drawn towards the chest. Some sort of support (such as a pillow) under the receptive partner's hips might also be useful. The penetrative partner positions him/herself between the receptive partner's legs. This position is often cited as good for beginners, because it allows them to relax more fully than is usual in the doggy position.