Historically, sweat has been an active ingredient in perfume and love potions.
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Brain scans show that people who view photos of a beloved experience an activation of the caudate - the part of the brain involving cravings.
103
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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You burn 26 calories in a one minute kiss.
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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!)
278
Sea otters hold hands while sleeping so they don’t drift away from each other.
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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.
464
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13