Ever wonder why we need to kiss each other? Scientists are trained to study this gesture, even if you don’t think so.

Scientists have studied kissing to understand why people do it. Scientists have yet to discover how and why this gesture of affection is possible. Two people touching their lips sensually could have evolved as a form or closeness between members in the same group. This can then be reduced to affection between two couples.

Researchers agree that kissing is not just about showing love; it’s also a way to get essential information that will help us select the right partner.

They believe that kissing can result in the release of chemicals which help us to unconsciously determine if the person we are kissing is a good match. According to yourtango.com, evolution’s main goal is to produce healthy, resistant offspring. Kissing appears to play an important role in this process.

Kissing is a way to be close enough to our partners to allow us to evaluate them.

It’s a form unconscious assessment. Pheromones, substances which transmit information about a person’s health and sexuality, play an important part in this.

When we say there is “chemistry,” it means that there is truth. A study by researchers has shown that women can smell the sweat of the men they are most compatible with genetically. They were most attracted to men with different genetic profiles than theirs.

This increases the likelihood of having healthy, more resilient children. You can also feel these cues by getting close to your partner for a kiss.

Kissing is more important to women than it is for men

Another study by Albany University in the United States showed that men and women perceive kissing in different ways. This gesture of closeness to a woman is more important than it is for men. Researchers found that men will have sex without ever having touched a woman while women won’t think of having sex with someone without first kissing him. This was not surprising considering that females in other species are more selective when it comes to choosing their partner.

However, the study found that men are more interested in French kisses.

Researchers believe that testosterone in men’s saliva is responsible for stimulating sexual desire and can be increased by kissing. Unconsciously, a man can detect estrogen levels in the saliva of a woman to tell him if she’s fertile.

Why do we love to kiss?

Kissing is not just a part of reproduction. It’s a gesture that makes you feel good.

The body secretes hormones during a kiss that make us feel happy, reduce stress levels, and bring us closer to our partner. Another study found that after a kiss the levels of oxytocin (also known as the “hormone to happiness”) increase and cortisol (the stress hormone) decrease. The cortisol levels drop after a kiss, regardless of how long the couple has been together. Kissing has two purposes: it stimulates us sexually and keeps us close to our partners.