Yawns are more contagious among people with closer relationships.
163
Men fall in love faster than women do.
32
Women who play video games tend to have more sex and be happier with their relationships than those who don’t.
18
Brain scans show that people who view photos of a beloved experience an activation of the caudate - the part of the brain involving cravings.
103
Historically, sweat has been an active ingredient in perfume and love potions.
309
It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
165
Wearing red increases attraction.
30
