Today is International Kissing Day or World Kiss Day. I found these interesting facts in a book called THE SCIENCE OF KISSING.
- The earliest literary evidence for kissing comes from India’s Vedic Sanskrit texts, dating back 3,500 years.
- A passionate kiss can make our pupils dilate – probably one reason so many of us close our eyes.
- Two-thirds of us tilt our heads to the right when we kiss, and it’s not correlated with right-handedness.
- A man is far more likely to prefer sloppy tongue kisses than a woman. The added testosterone from his saliva may serve to enhance her libido over time.
- We are not the only species to engage in kissing-like behaviors. Great apes press their lips together to express excitement, affection, or reconciliation.
- In studies, people remember more of the details about a first kiss than first sexual experience.
- Kissing works like a drug in our bodies, and can promote dopamine – the same neurotransmitter stimulated from addictive drugs like cocaine.
- Our lips are packed with sensitive nerve endings so even a slight brush can send a cascade of pleasurable signals to the brain encouraging us to continue under the right circumstances.
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