How Does The Science Behind Kissing (Why Do We Kiss) Work?

Kissing is like giving your brain and body a little hug that makes you feel happy and close to someone else.

When we kiss, our lips touch, it’s like when you press your cheek against your mom’s while she reads you a bedtime story. This touching sends messages through tiny wires in our bodies called nerves, all the way to our brain. The brain gets excited and starts sending out happy chemicals, like dopamine, which makes us feel really good, kind of like when you get your favorite snack after doing something hard.

Kissing also helps us know if someone is a good match for us. Our tongues can taste things, just like how you know if your juice is sweet or sour. When we kiss, we’re tasting each other, it’s like sharing a secret flavor only the two of you know.

Also, our skin feels nice when we touch someone else's, and that makes us feel warm and safe, just like when you snuggle under a blanket on a cold night.

So kissing is like a happy hug with taste, all from touching your lips to someone else’s.