Brain scans show that people who view photos of a beloved experience an activation of the caudate - the part of the brain involving cravings.
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When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
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A poll has found that computer 'nerds' make the best lovers, with 82 percent of IT geeks claiming they put their partner's pleasure above their own.
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Kissing an infection-free partner is good for your teeth!
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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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Historically, sweat has been an active ingredient in perfume and love potions.
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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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