How Exercise Helps Arthritic Joints Reduces Stiffness and Improves Mobility One of the most common symptoms of arthritis is joint stiffness, particularly first thing in the morning or after periods of inactivity. Regular movement helps keep joints mobile and can reduce the sensation of stiffness, making everyday activities easier. Even gentle activities such as walking, stretching, or swimming can help improve joint mobility and make movement feel more comfortable. Builds Str