Fatigue means that I cannot organize myself. Can't pull myself together to do specific things, in order. Just halfheartedly try to do a few things and give up for a while, unfocused. Unfocused mentally or physically.

Like having cognitive dysfunction that affects the whole body. And it can be bad enough so one cannot remember that one will come out the other side of this. Of one faintly remembers this, and therefore lies on the couch staring balefully at the television.