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If you could remove all of your skin, it would weigh up to 5 pounds.
About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.
Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.
Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
The familiar sounds of your heart are made by the heart's valves as they open and close.
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