Sensitivity of the lips is 200 times higher than that of the fingers.
More Kiss Facts
Passionate kissing burns 6.4 calories a minute. A Hershey's kiss contains 26 calories, which takes five minutes of walking-or about four minutes of kissing-to burn off.
According to U.S. statistics, an American woman would kiss an average of 80 men before she gets married.
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.