Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
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Our Right Lungs takes more air than our left lung.
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Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
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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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Our eyes are always the same size from birth, but our nose and ears never stop growing.
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The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
17
After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
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