13 health rules you can break

POSTED: 12:32 PM PST Jan 27, 2013    UPDATED: 11:00 PM PDT May 18, 2014 

Some health rules are followed religiously, but really have no medical or scientific foundation. Here are 13 popular rules that aren't as hard-and-fast as you might think.

swimming, swimmer
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istock

Don't swim after you eat. There's no evidence that this causes cramps, which could possibly lead to drowning. While it's true that eating diverts some blood to the digestive system, most experts agree your body can still provide enough blood and oxygen during exercise to keep cramps from happening.

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