For a long time I had been afraid of doing too much - even when I was feeling fairly well - for fear of relapse. A few weeks ago I started to add more activity and exercise when I'm having a "good" phase, with no ill effects. I have heard so many people with cfids say that if they do too much they pay for it the next day. For me, it seems that I have "good" and "bad" phases, and my activity level does not necessarily make me feel better or worse. It's as if this disease has an agenda of its own. Does cfids affect anyone else this way?