Kissing is one of our favorite parts about falling in love. But just because you've practiced it with a few partners doesn't mean you know everything there is to know about about puckering up.

So if you're serious about brushing up on your smooch smarts, then check out these jaw-dropping facts below:

1. The Average Person Spends Two Weeks Of His Or Her Life Kissing
Experts estimate that the average person will spend 20,160 minutes of his or her lifetime kissing.

2. Your Kissing Style Originates In The Womb
A German study that observed 100 couples noted that two-thirds of them tilted their heads to the right. The theory is that this instinct originates from the womb, when we naturally tilted our heads to the right.

3. Kissing Is A Serious Workout... For Your Face
A single kiss requires the coordination of 146 muscles, including 34 facial muscles and 112 postural muscles!

4. Kissing Has Amazing Health Benefits
Not only does kissing burn about 2-3 calories per minute, it also  strengthens your immune system, relieves aches and pains, and prevents cavities!

5. Kissing Can Increase Your Lifespan
One study determined that men who get a peck on the cheek from their wives before heading out to work lived five years longer than men who didn't.

6. How Many Kisses Before You Find "The One"?
According to one British study commissioned by eHarmony, it takes 15 kisses for women and 16 for men before they can find everlasting love.

7. French Kissers Were A Real Pain For Public Commuters
During the early 20th century, so many French commuters were getting frisky on the train that they had to ban kissing altogether.

8. The Blarney Stone In Ireland Is A Kiss-Magnet
Every year, more than 400,000 tourists will gather just to kiss the Blarney Stone. According to local legend, those who bend over backwards to kiss the stone are rewarded with "the gift of the gab." Not surprisingly, many people have fallen to their deaths attempting this superstitious feat.

9. We Almost Didn't Have Epic Movie Kisses
Back in 1930, a a set of censorship regulations called the Hays Code prohibited on-screen couples from kissing in a horizontal position. Even married couples had to be depicted "sleeping in twin beds on screen", and if kissing action did happen on the beds, one actor had to at least have their foot on the ground. The ban was finally dropped in the late sixties.

10. The Longest Kiss Lasted More Than 58 Hours!
According to the Guinness World Records, the current record for the longest-lasting kiss lasted for 58 hours, 35 minutes and 58 seconds.

11. Our Love Of Kissing Stems From ... Rats?
According to researchers at the University of Tokyo, our affinity for kisses descends from an ancient, rat-like creature called Eomaia scansoria. This common ancestor that lived sometime between 75 and 125 million years ago would rub noses with a mate to sample his or her pheromones and signal desire.

12. The "X" Behind XOXO Traces Back To The Middle Ages
Often used to sign cards and love letters, the real origin behind "XOXO" can be traced back to the Middle Ages when most people couldn't read or write. "X" was used as a stand-in signature, while "O" represented kissing the document as an added gesture of sincerity.

13. Kissing Used To Be Outlawed
In 1439, during the reign of King Henry VI, kissing was actually BANNED throughout England to curtail the spread of disease in the kingdom. And that wasn't the only time it happened; in 16th century Naples, kissing in public was banned and actually punishable by death.
 
14. The Italians Are The Experts At Kissing
According to one survey, 56% of people worldwide rarely or never kiss passionately, but 75% of Italians say they do so a few times a week.

15. The Science Of Kissing Is An Actual Career
The study of kissing itself is known as philematology, and someone who studies kissing is known as an osculologist.

[YourTango]