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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When dragonflies mate, their tails form a love heart.
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Parents receive 1 out of every 5 Valentines.
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There's a love mattress that is specifically designed for couples who sleep on each other's arms.
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A couple had their wedding rings engraved with a waveform of their own voices saying "I do."
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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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