Running can be a great way to boost your cardiovascular fitness, and it’s also a great way to help you achieve and maintain a healthy weight.

Certain myths about running, though, could scare people away from the exercise.

Some people have heard that running is bad for the knees, and that it may even cause arthritis.

“While you certainly can develop arthritis over time, it’s not necessarily the running that’s going to be the thing that makes you develop arthritis,” said Cleveland Clinic orthopedic surgeon Dr. Kim Gladden.

Negative running myths could hold people back, but some carry little truth

A recent study found that running may actually help protect against inflammation and arthritis in the knees down the road.

Another common running myth is that runners must be in top physical shape.

Gladden said as long as a doctor has cleared an individual for cardiovascular exercise, he or she can start slow and build up to your desired fitness level.

She says anyone who can walk three miles without a problem can try alternating the walk with intervals of jogging for about 2 to 3 minutes. Then, increase the duration of the jogging over time.

Gladden said running uses different muscles than other sports and activities.

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