In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
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When someone looks at a new love, the neural circuits that are usually associated with social judgment are suppressed.
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The average person in their lifetime will spend an estimated 20,160 minutes kissing!
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Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
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In 1999, a fisherman found a love letter in a bottle from a soldier in WWI. He returned said letter to the now deceased widows 86 year old daughter.
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Cuddling (or other ‘love’ acts) helps to heal physical wounds faster due to the release of Oxytocin which is proven to reduce swelling.
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When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
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It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
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