Yawns are more contagious among people with closer relationships.
163
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
Men fall in love faster than women do.
32
Women rate men more attractive if other women are looking and smiling at him.
17
It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
165
Intelligent men tend to be more sexually faithful.
31