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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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If you use artificial sweeteners, such as cyclamates, your eyes may be more sensitive to light. Other factors that will make your eyes more sensitive to light include use of antibiotics, oral contraceptives, hypertension medications, diuretics, and antidiabetic medications.
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The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.
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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.