Your tongue has a unique print — as individual as a fingerprint.
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Your brain enables existence.
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Your bones are stronger than steel.
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Your brain can store the equivalent of millions of gigabytes of information.
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The average person produces about 1–2 liters of saliva per day.
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The human heart has four chambers.
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Red blood cells complete a full circuit of the body in about 20 seconds.
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The human eye can detect a candle flame over a mile away in darkness.
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The human brain weighs about three pounds on average.
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