Carrie, can you find any exercise program on television that isn't too hard on your knees? I'm doing a Sit and Be Fit on PBS again. Probably too easy for someone your age. The last half is standing if wanted and I do want. Also walking. Your little guy is old enough for short walks. I have two motivators to keep me walking. If I can't walk Lily and Moira I have to rehome them and that would not be good for them or for me mentally.