The human body contains over a billion miles of DNA.
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Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
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Dogs can be trained to identify the scent of lung cancer long before symptoms develop.
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The average sperm cell swims at 8 inches per hour.
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The largest cell in the human body is the female egg and the smallest is the male sperm.
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Your body is creating and killing about 2.4 million red blood cells per second.
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The human brain uses approximately as much energy as a 10 watt light bulb.
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An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
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