A study has shown the kind of face a woman finds attractive on a man can differ depending on where she is in her menstrual cycle.

If she is ovulating, she is attracted to men with rugged and masculine features.

However, if she is menstruating, or menopausal, she tends to be more attracted to the face of a man writhing in pain with duct tape covering his mouth and a spear embedded in his chest while he's on fire.