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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
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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.
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The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.