How often do you walk or run?

I need to make walking and other exercises a priority again and a part of my routine. That is my goal for October, and even starting this coming week.
I prefer walking, and easy low-impact exercising for my joints due to Rheumatoid Arthritis. Exercising and stretching are one of the keys to keeping my mobility longer.
How do you exercise? If you have Rheumatoid Arthritis or a chronic illness, how do you exercise? What exercises would you like for me to discuss in a future blog post?