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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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People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.
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There are more nerve cells in one human brain than there are stars in the Milky Way.
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Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.