Some days, it seems regular exercise has become a panacea — good for the heart, good for blood pressure, good for glucose levels, good to limit sad days and depression. But what about people tormented with the pain and stiffness of osteoarthritis, particularly in the knees and hips? What are they supposed to do?

There was an era when ethical medical practice demanded a no-movement solution for people in pain. Not anymore. Today, the more than 50 million adult Americans with arthritis are advised to seek the same 150 minutes a week of moderate exercise as everyone else.

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