Why Do We Kiss?

So many people may have been wondering at why we kiss to either show affection or committment..but science has explained the chemistry behind entangling of lips...you don't wanna stop reading, do you?

Why do we kiss?
Kissing is wonderful - so wonderful that most of us can recall 90 per cent of the details of our first kiss. Human beings have been preoccupied with kissing for years. It features as the climax of all great Hollywood love stories, and is celebrated by singers and poets alike. In reality, kissing is nothing more than two people putting their faces together and exchanging spit. How on earth did something so gross and irritating become so appealing? The act of kissing has developed to become advantageous to humans: if it didn't serve an evolutionary purpose, we simply would not do it.
So what’s in a kiss? More than you might think.
Nature and nurture
A kiss might seem like a natural thing to do for most of us, but the scientific jury is still out on whether it is a learned or instinctual behaviour. Approximately 90 per cent of cultures kiss, making a strong case for the act being a basic human instinct. I know what you’re thinking...what about the other ten per cent? If kissing was a natural behaviour, surely all cultures would do it? While this small minority doesn’t 'kiss' like the rest of us (due to superstitions and cultural beliefs), they may still engage in kissing-like behaviours, such as rubbing noses together.
If kissing is a naturally instinctive, why don’t animals kiss too?
Many animals actually do engage in kissing-like behaviours to show affection. These behaviours are so diverse, from dogs sniffing and licking potential mates, to elephants putting their trunks in each other’s mouths. However, one animal kisses just like we do: the bonobo ape. This isn't too surprising, considering we share 98.7 per cent of our DNA with this hairy cousin. Bonobos kiss for comfort and to socialise. Sometimes after a fight they even kiss and make up. We humans kiss for the exact same reasons, indicating that kissing might be ingrained deep in our DNA.
The evolution of Kissing

Many scientists believe that kissing came from the practice of kiss-feeding, where mothers would feed their young mouth-to-mouth. Imagine birds feeding worms to their little chicks. Cute, right? Now imagine someone feeding you your chewed-up breakfast via their mouth. This sounds disgusting to most people, but we humans used to do it all the time! From this passing of food, pressing lips became synonymous with love. Understandable, since the way to most people’s hearts are through their stomachs. Over time, this symbol of affection may have evolved to give us romantic kissing.
So what is the purpose of kissing?
Imagine a kiss being like a job interview for the elusive role of being someone’s significant other. The interviewer is looking for the candidate who best matches the job description. Similarly, when we kiss, we are looking for a mate that best matches our genetic make-up. 'Wait, what do genes have to do with kissing?!' - I hear you scream. Well, we actually have a group of genes called the MHC (major histocompatibility complex) genes that form part of our immune system and give us our natural scent. In a famous experiment, women overwhelmingly preferred the smell of t-shirts worn by men with different MHC genes from their own. This is because when two people with different MHC genes mate, the baby they would produce would have a selection of components from each of their immune systems. A more diverse immune system has a greater ability to fight disease. Therefore, opposites really do attract. This explains why we prefer kissing one person over another. It’s in our genes.
What happens in our brains when we kiss?
The brain goes into overdrive during the all-important kiss. It dedicates a disproportionate amount of space to the sensation of the lips in comparison to much larger body parts. During a kiss, this lip sensitivity causes our brain to create a chemical cocktail that can give us a natural high. This cocktail is made up of three chemicals, all designed to make us feel good and crave more: dopamine, oxytocin, and serotonin. Like any cocktail, this one has an array of side-effects. The combination of these three chemicals work by lighting up the 'pleasure centres' in our brain. The dopamine released during a kiss can stimulate the same area of the brain activated by heroin and cocaine. As a result, we experience feelings of euphoria and addictive behaviour. Oxytocin, otherwise known as the 'love hormone', fosters feelings of affection and attachment. This is the same hormone that is released during childbirth and breastfeeding. Finally, the levels of serotonin present in the brain whilst kissing look a lot like those of someone with Obsessive Compulsive Disorder. No wonder the memory of a good kiss can stay with us for years.
Is there a difference in Platonic and non-Platonic kisses?

"Women say they can tell if a relationship is going to work after the first kiss, after the first night of kissing," he says. "They just get a feeling, an intuition."

And while kissing may feel oh-so-good, it also has health benefits, too. It triggers a whole spectrum of physiological processes that boost your immunity and generally spruce up that body you work so hard to keep attractive.

Anyone who has ever given their best friend a quick kiss on the cheek will know it feels very different to the rush of sensations experienced when you make out with the smouldering hottie you've been chatting up all night. Non-romantic kissing is very common, but it is much more of a cultural phenomenon than the romantic kiss. Children blow kisses to their parents, some Europeans air-kiss as a greeting, and we kiss friends to say farewell. The closeness inherent in these kisses can create feelings of affection or respect, but not the feelings of euphoria that usually follow a romantic kiss. Platonic kisses are usually brief pecks on the cheek. In contrast, romantic kisses involve intimate, lengthy lip-to-lip contact. Since it is this lip contact that activates the chemical cocktail in the brain, a Platonic kiss just can’t compete.
Like many human behaviours, kissing is fascinating and complex. We have a lot left to learn about kissing, so get out there and research in the name of science! (As if you needed an excuse...)
A kiss can work some magic in humans like it's a natural therapy to some illness.

1. Boosts bonding

Whether you're smooching a baby or making out with your spouse, locking lips promotes intimacy and boosts bonding. Dawn Maslar, a biology professor and award-winning author sums it up like this: "When we kiss, both men and women produce the hormone oxytocin. It's often called the 'love hormone' because it causes us (particularly females) to bond." The fact is, we kiss the ones we love, and love the ones we kiss!

2. Fights illness

It may sound counterintuitive, but swapping spit is a great way to fend off viruses — especially if all that kissing leads to sex. Research from the journal Medical Hypotheses indicates that women build up immunity against the cytomegalovirus by kissing infected partners. Another study performed at Wilkes University found that study participants who had sex once or twice a week had higher levels of the infection-fighting antibody immunoglobulin A. So if you want to make it through cold season unscathed, it's time to pucker up!

3. Makes better marriages

Seriously. It's not just that frequent kissers may have stronger marriages (which is great for mental and emotional health), but kissing can actually help you choose the right partner. When you kiss someone, your body is subconsciously sharing information about your respective immune systems. The technical term is major histocompatibility complex (MHC). Biologically, it's important for partners to bring different immune system genes to the table so that their offspring will have a better opportunity for survival. So if kissing your crush immediately douses the flames of love, you might be able to chalk it up to biological incompatibility.

4. Increases happiness

Kissing releases endorphins, and to quote Elle Woods from Legally Blond, "Endorphins make you happy." Since depression affects an estimated 17.5 million Americans and costs approximately $30 billion each year, why not give yourself a free happiness boost with a little kissing?

5. Decreases pain

During a heated, heart-racing kind of kiss, your body releases adrenaline, which can actually reduce feelings of pain. Pair that with the similarly pain-reducing endorphins that are released during physical intimacy, and locking lips gives you a double whammy for fighting that nagging headache.

6. Lowers stress

How often do you feel frazzled and exhausted at the end of the day? Blame it on your body's natural response to stress: cortisol. Dr. Sharon Stills, naturopathic physician and upcoming author of R.E.D. Alert — Get Real and Heal, points out that "kissing lowers cortisol levels. Cortisol is our stress hormone and it has a negative effect on our immune system, endocrine system and brain health, specifically the hippocampus." So if you can lower stress and reduce those negative effects by simply stealing a kiss with your spouse, do it as often as you can!

8. Burns calories

Sure, kissing may not burn as many calories as, say, running a mile, but it does pump up your metabolism to about twice its usual rate. Most people burn about 1 calorie a minute at rest, but according to Dr. Stills, kissing burns about 2 to 3 calories per minute. You won't want to skip Zumba in favor of a makeout session, but next time you're lounging around on the couch with your spouse, turn up the heat with some calorie-boosting kisses.

9. Saves face

Kissing doesn't just burn calories — it's a workout for your face. If you fear your jowls are starting to sag, try tightening things up with some regular, vigorous kissing. It's the perfect non-surgical prescription to enhance your youthful appearance: safe, free and fun! (OK, so we're not totally sure about this one... but it's worth a shot). #not_for_the_unmarried_tho

10. Turns up the fun

Speaking of fun, kissing is a blast! According to Gina Cloud, women's health advocate and creator of GinaCology, "There are more than 30 kinds of kisses in the Kama Sutra. Kissing is such an important way of expressing ourselves, and the many different ways we can do it bring it into the realm of creative. With so many ways to kiss and express ourselves through it, fun becomes part of the experience, and fun is a great tool for happiness!"

 
Note: My hands are clean ooo.....i didn't asked you to go on and kiss everything or everyone you meet, neither did i ask you not to..... You are strictly on your own #lol.