Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
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Held in farts enter your bloodstream and are bad for your body.
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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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After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
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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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In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
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In one day, adult lungs move about 10,000 litres of air.
11
Our Right Lungs takes more air than our left lung.
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