The ‘challenge sex position’ is a challenging position that requires a flexible woman. The woman stands on a low stool or chair, and the man stands at her back. The woman then squats until her buttocks became as the same level of the man’s groin. The woman arches her back and placed her arms on her knees. The man holds the hips of his lover and thrusts into her.
This position is not easy, and a lot of care is needed to ensure that no accident happens. It is ideal to use a stool or chair that is extremely stable, or the lovers can use a permanent wedge for the woman to stand in.
The woman needs to be able to make sure that she keeps herself stable on top of the chair. And the man needs to work harder to stabilize the woman to keep her from falling off.