Human World

The science of kissing and why it’s good for you

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February 14, 2023

You kiss your romantic partner, your children, and even your pets, but why? Educational YouTuber Joe Hanson of the series It’s Okay to be Smart explains in this video.

The science of kissing

Kissing is intensely sensory. Human lips are made for kissing; they have more nerves than any other part of your body.

Kissing releases endorphins (natural feel-good chemicals) and internal stimulants that send extra oxygen to your brain. At the same time, kissing lowers the stress hormone cortisol.

Henson goes on to explain that 90 percent of all human cultures kiss. We have records of kissing going back 3,500 years. So, kissing is part of our human heritage. It’s a complex biological act, it cements relationships and it’s good for you.

What’s not to love?

The science of kissing: Couple kissing in the dark, under the moon. — A couple kiss under a full moon and starry sky. And according to the science of kissing video, it’s good for you! Image via Chris Ainsworth on Unsplash.

Bottom line: Watch the video to understand why kissing is good for you.

The 2023 EarthSky lunar calendar. A unique and beautiful poster-sized calendar showing phases of the moon every night of the year. Treat yourself!

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February 14, 2023

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Human World

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The EarthSky team has a blast bringing you daily updates on your cosmos and world. We love your photos and welcome your news tips. Earth, Space, Sun, Human, Tonight. Since 1994.