Yawns are more contagious among people with closer relationships.
163
A man is more likely to get a woman's phone number if he is accompanied by a dog.
20
Intelligent men tend to be more sexually faithful.
31
One in five long-term love relationships began with one or both partners being involved with others.
177
People are more likely to tilt their heads to the right when kissing instead of the left (65 percent of people go to the right!)
278
Women who play video games tend to have more sex and be happier with their relationships than those who don’t.
18
Historically, sweat has been an active ingredient in perfume and love potions.
309