Kissing

Locking lips is something we’re all pretty familiar with, but where does that urge to plant a big wet one on someone come from? It's not just about having fun. There's some biology to thank, too!

Locking lips is something we’re all pretty familiar with, but where does that urge to plant a big wet one on someone come from? It's not just about having fun. There's some biology to thank, too!