When you look up at the blue sky and see white dots flying around, you’re actually seeing your own white blood cells.
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Wearing headphones for an hour increases the bacteria in your ear 700 times.
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Men have larger hearts; women's hearts beat faster.
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Every time you lick a stamp, you're consuming 1/10 of a calorie!
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The aorta, the largest artery in the body, is almost the diameter of a garden hose.
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A woman's sense of smell is most sensitive during ovulation.
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The adult human brain weighs about 3 pounds (1,300-1,400 g).
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Ernest Hemingway survived through anthrax, malaria, pneumonia, dysentery, skin cancer, hepatitis, anemia, diabetes, high blood pressure, two plane crashes, a ruptured kidney, a ruptured spleen, a ruptured liver, a crushed vertebra, a fractured skull, and more.
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