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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.
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Green tea is able to stop the scent of garlic or onion from causing bad breath.
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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.