Let's Face it. Who Likes Exercise?

Today was a little unnerving. I took my mother for a follow up visit to a memory care specialist. She has some issues going on that have given us both concerns over just what this is. Or could be. The specialist apparently has a few "concerns" as well, nothing concrete but suggests she go ahead with the full battery of tests to see if it could confirm that the big "A" is coming on. I've been reading some on the brain and alzheimer's as well as other forms of dementia. Studies have shown that exercise, physical as well as mental, can help in postponing the progression of the disease. So what's on my mind now is how to encourage an 84 year old woman with bad knees to exercise. In her case, walking is best. Fortunately, we live in a state where bad weather is not an issue. Motivation is. Not just my mother but me! Let's face it. Who really likes to exercise? We're told it's good for just about everything. It's time to find out.