Penis size may matter more to men than women

Genitalia size does have some evolutionary benefits, but men remain a bit touchy about the subject. Breakthroughs, discoveries, and DIY tips sent six days a week. Human history is full of juvenile jokes, odd stereotypes, and outright harmful misinformation about the size of a man's penis. But the long and short of the real science behind size suggests that men themselves are more likely than women to get riled up about the subject . According to a study published today in the journal, men routinely feel more physically and sexually threatened by well-endowed rivals--regardless of how women feel about the subjects.