The human brain has the capacity to store everything that you experience.
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The average sperm cell swims at 8 inches per hour.
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Our Right Lungs takes more air than our left lung.
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If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
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It takes about 20 seconds for a red blood cell to circle the whole body.
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Cracking your knuckles does not actually hurt your bones or cause arthritis. The sound you hear is just gas bubbles bursting.
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