In medieval Italy, if a man was caught kissing a woman in public, he had to marry her whether he liked it or not.
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Research has shown that allowing chocolate to melt in your mouth produced brain and heart rate activity that was simliar to - and even stronger than - that produced with passionate kissing.
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You burn 26 calories in a one minute kiss.
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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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When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
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The average person in their lifetime will spend an estimated 20,160 minutes kissing!
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Kissenger is a pig-shaped robotic device that lets you kiss someone over the internet.
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8 out of 10 people think that the first kiss indicates how the rest of the relationship will be.
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