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Did you know?
Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.
Did you know?
In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.
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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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The average adult has about 21 square feet of skin.
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Your heart beats over 36 million times a year.