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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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If you could remove all of your skin, it would weigh up to 5 pounds.
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The longest a person has survived after a heart transplant is 24 years.
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Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).
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According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.