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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Men who kiss their wives in the morning live five years longer than those who don't.
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A man's beard grows fastest when he anticipates sex.
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The typical person spends about 600 hours having sex between the ages of 20 and 70.
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Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
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Couples' personalities converge over time to make partners more and more similar.
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When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
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