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Bad advice and outdated research could be putting a kink in your workout efforts.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Fitness: Myths vs. facts – Bad advice and outdated research could be putting a kink in your workout efforts.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?
Fitness: Myths vs. facts – Crunches do tone a small portion of your abs, but you may get better results from moves engaging your entire core.
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Sweating doesn't equate to calories burned. It might be the result of a hot room, the weather or your physiology.
Photos: Fitness myth or fact?
Fitness: Myths vs. facts – Sweating doesn't equate to calories burned. It might be the result of a hot room, the weather or your physiology.
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Running is safer on your joints than contact sports, but it's not totally harmless. A total-body workout at least twice a week along with regular jogs can build up muscles supporting the knees.
Photos: Fitness myth or fact?
Fitness: Myths vs. facts – Running is safer on your joints than contact sports, but it's not totally harmless. A total-body workout at least twice a week along with regular jogs can build up muscles supporting the knees.
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Stretching after exercise won't completely reduce soreness or speed muscle tissue repair, but can increase joint flexibility.
Photos: Fitness myth or fact?
Fitness: Myths vs. facts – Stretching after exercise won't completely reduce soreness or speed muscle tissue repair, but can increase joint flexibility.
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More and more studies are pointing to the power of short workouts rather than longer ones. Some research even suggests quickie sessions might be better.
Photos: Fitness myth or fact?
Fitness: Myths vs. facts – More and more studies are pointing to the power of short workouts rather than longer ones. Some research even suggests quickie sessions might be better.
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