About twenty-five percent of the population sneeze when they are exposed to light.

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The brain represents about 2% of your total body weight. It is roughly 140mm wide, 167mm long and 93mm high

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In a lifetime, an average human produces 10,000 gallons of saliva.

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Even if you eat food standing on your head, the food will still end up in your stomach.

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Every hour one billion cells in the body must be replaced.

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There are 10 million bacteria at the place where you rest your hands at a desk.

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Blood is such a good stain that Native Americans used it for paint.

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Scientists have determined that having guilty feelings may actually damage your immune system

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It is impossible to sneeze with your eyes open.

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Pound for pound, your tongue is the strongest muscle in your body.

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