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Did you know?
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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Congestive heart failure is a serious disorder that carries a reduced life expectancy. Heart failure is usually a chronic illness, and it may worsen with infection or other physical stressors.
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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.