The desire to squeeze and hug cute things comes from the same place in your brain as aggression.
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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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Holding hands with someone you love can alleviate physical pain as well as stress and fear.
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Dolphins have names for one another.
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Sea otters hold hands while sleeping so they don’t drift away from each other.
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When dragonflies mate, their tails form a love heart.
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