A bit of an odd question maybe, but are there many people here who were sedentary when they were healthy and so would not be exercising even if they were at full capacity? I find it so difficult each day that I can't exercise and have to limit physical activity. My worse crash came on from continuing to exercise. I wonder if sedentary people tend not to have a worsening of CFS, or if they get just as sick and have less underlying fitness to keep themselves from going down hill. I know some people who are perfectly healthy but just don't like to exercise. If I say I have trouble with exercise they tend to assume I just don't like physical activity, as they don't.