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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.
More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
Your heart beats over 36 million times a year.
Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.
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