Why Do We Like to Kiss?

The world record for the longest, continuous kiss is 58 hours, 35 minutes, and 58 seconds. But why do we kiss? if you think about it, kissing represents peace, respect, passion, love. But, when the first two people in human history kissed, were they just kind of being gross?
let’s begin with what we do know: kissing feels good, and it’s good for you. A passionate kiss burns about 2-3 calories per minute, and releases Epinephrine and Norepinephrine into the blood, making your heart pump faster. Kissing, more often, is correlated with a reduction of bad cholesterol and perceived stress. But, these positive effects didn’t become widespread by accident. Why did brains and bodies that love kissing become so common?

Evolutionary psychologists have argued that what we know today as “kissing” may have come from “kiss-feeding”: the exchange of pre-chewed food from one mouth to another. Mother birds are famous for doing this, and many primates are frequently seen doing it as well. Not that long ago, it was common between human mothers and their children. In fact, before commercially produced, or DIY, baby-food instructions were readily available, it made a lot of sense.