In Korea, if you do not receive any gift on Valentine's day then all the singles go to Korean restaurants and eat black noodles to celebrate (or mourn) their single status.
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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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Cuddling (or other ‘love’ acts) helps to heal physical wounds faster due to the release of Oxytocin which is proven to reduce swelling.
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Kissing an infection-free partner is good for your teeth!
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In Korea, there's a man named Lee Jin-gyu who fell in love and married his life-sized Japanese body pillow (called a "dakimakura").
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You burn 26 calories in a one minute kiss.
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Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
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