The human brain has the capacity to store everything that you experience.
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Every year your body replaces 98% of your atoms.
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Your thumb is about the same size as your nose.
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The adult human brain weighs about 3 pounds (1,300-1,400 g).
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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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The average sperm cell swims at 8 inches per hour.
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Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
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Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
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