Some health rules are followed religiously, but really have no medical or scientific foundation at all. Here are 13 popular rules that aren't as hard-and-fast as you might think.
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Gum stays in your stomach for seven years. Every child who has swallowed his gum has heard this one. Chewing gum, just like anything else you swallow, will get picked up by the fluids and other food in your stomach and moved through digestion in just a few days.