When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25
Historically, sweat has been an active ingredient in perfume and love potions.
309
In medieval Italy, if a man was caught kissing a woman in public, he had to marry her whether he liked it or not.
456
You burn 26 calories in a one minute kiss.
605
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.
14
Men who kiss their wives in the morning live five years longer than those who don't.
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