The adult human brain weighs about 3 pounds (1,300-1,400 g).
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Enamel is hardest substance in the human body.
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Your body is creating and killing about 2.4 million red blood cells per second.
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If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
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Your heart will pump about 212 million liters in its lifetime.
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The human body contains over a billion miles of DNA.
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It takes about 20 seconds for a red blood cell to circle the whole body.
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The human brain has the capacity to store everything that you experience.
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