Your bones constantly break down and rebuild.
Fact #2636
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The human nervous system can transmit signals faster than a Formula One car.
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The human heart beats about 100,000 times per day and around 2.5 billion times in a lifetime.
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The human brain uses roughly 20% of the body's total energy despite being only 2% of its weight.
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The human liver can regenerate lost tissue.
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The average person produces about 1–2 liters of saliva per day.
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Your brain fills in your blind spot so you never see it.
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The femur (thigh bone) is stronger than concrete.
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Your brain filters out your nose from your vision constantly.
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