Kissing an infection-free partner is good for your teeth!
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In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
4
Historically, sweat has been an active ingredient in perfume and love potions.
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Parents receive 1 out of every 5 Valentines.
20
'X' became symbolic for a kiss because in the middle ages when alot of people were illiterate and they used to sign documents with an X and then kiss it for sincerity.
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The average person in their lifetime will spend an estimated 20,160 minutes kissing!
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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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The typical person spends about 600 hours having sex between the ages of 20 and 70.
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