The adult human brain weighs about 3 pounds (1,300-1,400 g).
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Poor eyesight (myopia) is associated with higher IQ.
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Our eyes are always the same size from birth, but our nose and ears never stop growing.
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Our Right Lungs takes more air than our left lung.
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Your thumb is about the same size as your nose.
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Your heart will pump about 212 million liters in its lifetime.
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Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
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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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