“…To touch with the lips especially as a mark of affection or greeting… to touch gently or lightly… to salute or caress one another with the lips… to come in gentle contact.” … Webster’s Dictionary, definition of kissing
The lips are one of the most sensitive parts of your body. Although you may not think about the biology behind a kiss, kissing has a lot to do with igniting the hormonal chemicals in your body. This produces a lot of electricity between you and the person you are about to kiss.
“I do not know how to kiss, or I would kiss you. Where do the noses go?”
Each lip has many touch receptors and these are crowded together in a very small place, so even the lightest touch registers. This is why it really hurts when you burn your lips, and why even the slightest touch can be enjoyable. These receptors create electrical signals that travel to your brain, releasing chemicals and causing that “feel-good” feeling to occur.
Kissing started early in our evolution. Even Chimpanzees kiss after a fight. Scientists are not quite sure why we kiss; only that kissing may be an instinctual action. It could also be the result of learned behaviour.
One theory is that kissing helps us sniff out desired qualities in a mate. When we smell the person we kiss, our pheromones communicate and exchange information.
Here are a few of the many varieties of “kisses” that exist. Not all of these are acts of love and passion, but it is interesting to note the spectrum of emotional sensation that results from this one mode of expression.