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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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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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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
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More than 4.4billion prescriptions were dispensed within the United States in 2016.
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Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.