I think it depends a lot on the person and then the life that person is leading. I feel the same as Nina, that there are some people who probably should not be doing this. In my case, for example, i'm quite functional mentally and also i can leave the house every day and travel ocasionally, if i plan it well. It was not always like that though. But when i go out, i go by car and don't walk around much. Also i don't carry around heavy objects, for example. It might well be that i'm deconditioned to some degree, but i know from experience that if i do more, physically, i will lose my mental capabilities to some degree and also the symptoms will get stronger. I can feel how the illness gets out of control then. I guess it depends a lot on how you define "exercise". Let's say somebody does not leave the house and does not have to do any sort of housework. Then, bottom line, it might be less physical activity, if that person did some stretching, moving around for a short time, compared to leaving the house, go shopping, do some work at home, etc. But i think the most important thing is that we understand that there is a broad spectrum of severity. I don't like the idea that some people feel forced to be more active or feel bad if they can't do (and are right about it) what is recommended and might be a good thing for others.