In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
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The typical person spends about 600 hours having sex between the ages of 20 and 70.
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Historically, sweat has been an active ingredient in perfume and love potions.
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Studies show that the risk of a “secret love” being revealed heightens romantic feelings for the partners, thanks to increased levels of phenylethylamine (PEA).
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According to the New York Times, a study conducted during the 1980's found that men who kiss their wives before leaving for work live longer, get into fewer car accidents, and have a higher income than married men who don't.
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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.
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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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