Attraction Facts

The pupil of the eye expands as much as 45 percent when a person looks at something pleasing.

Wearing red increases attraction.

Studies show women tend to rate men who display a good sense of humor as more attractive partners, with researchers suggesting humor signals desirable traits like intelligence and social skills.

Women rate men more attractive if other women are looking and smiling at him.

Male orangutans can be attracted to women with red hair. One male, Hsing Hisng, has even ripped pictures of Nicole Kidman out of magazines and placed them in his enclosure.