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Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
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Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.
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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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The familiar sounds of your heart are made by the heart's valves as they open and close.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.