Women rate men more attractive if other women are looking and smiling at him.
17
8 out of 10 people think that the first kiss indicates how the rest of the relationship will be.
212
According to the New York Times, a study conducted during the 1980's found that men who kiss their wives before leaving for work live longer, get into fewer car accidents, and have a higher income than married men who don't.
14
It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
165
Holding hands with someone you love can alleviate physical pain as well as stress and fear.
26
Yawns are more contagious among people with closer relationships.
163