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A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.
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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
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In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.
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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 oldest recorded age was 122. Madame Jeanne Calment was born in France in 1875 and died in 1997. She was a vegetarian and loved olive oil, port wine, and chocolate.