As a rule, 66 percent of people keep their eyes closed while kissing. The rest take pleasure in watching the emotions run the gamut on the faces of their partners.
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The typical person spends about 600 hours having sex between the ages of 20 and 70.
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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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Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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Holding hands with someone you love can alleviate physical pain as well as stress and fear.
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A Korean man called Lee Jin-gyu fell in love with his large, huggable pillow and married it.
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