Regular moderate exercise helps a patient with arthritis mainly because it
- A. cures the disease completely
- B. keeps the joints mobile and strengthens the muscles around them
- C. regrows the worn away cartilage
- D. dissolves calcium out of the bones
Explanation
Movement nourishes cartilage, prevents stiffness and builds supporting muscle, which unloads the joint. Exercise cannot restore lost cartilage, so its benefit is protection and function, not cure.
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