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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
People about to have surgery must tell their health care providers about all supplements they take.
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
Everyone has one nostril that is larger than the other.
On average, the stomach produces 2 L of hydrochloric acid per day.
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