Experts, family, and friends mean well when they share health tips. They hope to inform us so that we can be well and safe. Often, we pass along this advice, assuming our sources are solid. In recent years, though, breakthroughs in research have fostered a growing realization that many of these handed-down concepts are false; unenlightened fluff or even unintentionally harmful fiction. It's time to turn these popular health myths on their heads.


1. Muscle tissue turns into fat when you stop exercising.

Muscle tissue is made up of muscle cells, and fat tissue derives from fat cells. These cells do not convert from one into the other. The truth: muscle does decrease in size and become flabby if you stop working out. This myth might also come from the fact that when people quit exercising, they often fail to adjust their calorie intake, which may cause weight gain.

overweight man exercising GCShutter / Getty Images


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