If you have arthritis, rheumatoid or degenerative joint disease, exercise is important to minimize your disability. Knee arthritis is less troublesome if your leg muscles are strong.
Arthritic fingers are more nimble if they are exercised.
For knees the best exercise is lifting about ten pounds on your feet when sitting down. For hands, crumpling magazines one page at a time works well. For wrists, try swinging a bath towel in a circle. For feet, pick up pencils with your toes. Any information presented in this site is general in nature.