How to build muscle as age tears it down

By Dr. Melina B. Jampolis, CNN

Updated 0912 GMT (1712 HKT) March 6, 2018

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Bad advice and outdated research could be putting a kink in your workout efforts. Here are some fitness myths that have proved to be just that.

Photos: Fitness myth or fact?

Fitness: Myths vs. facts – Bad advice and outdated research could be putting a kink in your workout efforts. Here are some fitness myths that have proved to be just that.

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Crunches do tone a small portion of your abs, but you may get better results from moves engaging your entire core.

Photos: Fitness myth or fact?