The average person in their lifetime will spend an estimated 20,160 minutes kissing!
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Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
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Men who kiss their wives in the morning live five years longer than those who don't.
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People are more likely to tilt their heads to the right when kissing instead of the left (65 percent of people go to the right!)
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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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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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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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