As a rule, 66 percent of people keep their eyes closed while kissing. The rest take pleasure in watching the emotions run the gamut on the faces of their partners.
687
It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
165
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
There's a love mattress that is specifically designed for couples who sleep on each other's arms.
12
Intelligent men tend to be more sexually faithful.
31
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
Yawns are more contagious among people with closer relationships.
163