There's a love mattress that is specifically designed for couples who sleep on each other's arms.
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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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Parents receive 1 out of every 5 Valentines.
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In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
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Ten seconds of hugging a day increases levels of oxytocin, which can reduce blood pressure, thus cutting the risk of heart disease.
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Wearing red increases attraction.
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The single biggest predictor of love is proximity.
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