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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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Green tea is able to stop the scent of garlic or onion from causing bad breath.
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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 human body produces and destroys 15 million blood cells every second.
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Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.