A: A large chin

Women who have large chins are more likely to cheat on their partners, according to a study conducted by researchers from the University of Western Ontario, Rutgers University, the University of Minnesota and Franklin and Marshall College. It seems that while women with prominent chins are more sexually active than their friends who have softer features, they are less attractive to men who are looking for a wife. A large chin is caused by a high level of testosterone, the male growth hormone, which is present in all women in varying amounts. It’s testosterone that increases sexual assertiveness not only in men, but also in women. A real-life example: Actress Meg Ryan has a strong chin, and she famously cheated on her husband Dennis Quaid with actor Russell Crowe.