Certain Exercises Keep Your Knees Healthy

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By Molly Clifton

Story Created: Nov 26, 2012 at 1:04 PM CDT

Story Updated: Nov 26, 2012 at 1:04 PM CDT

Too much or too little exercise can be bad for your knees.

Researchers in California looked at cartilage changes in the knees of more than 200 middle-aged adults over a four-year period.

Those who participated regularly in high-impact activities like running lost cartilage in their knees, but so did patients with very little physical activity.

Doctors say activities like swimming and walking are easier on the knees.
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