When I see that symptom listed as a diagnostic criteria, I don't really think it applies to me. I go to bed at night. I eventually fall asleep (I always took a long time to fall asleep, even before CFS). I usually wake up several times in the night, sometimes requiring an hour or more to fall asleep again. Then I get up and don't feel like I need more sleep. I just don't know whether that qualifies as refreshing sleep or not. I'm wondering if it's just so long since I had normal sleep that I don't remember what refreshing sleep feels like. Sleep quality seems to be one of those qualities that we can't measure properly or compare to that of other people. Do sleep clinics actually measure sleep quality? I don't think I'd actually bother to go to a sleep clinic, since they wouldn't be able to do anything about the root cause (CFS), and I don't feel so dreadful by lack of proper sleep that I want to get into sleep drugs with side-effects and addiction potential. I'm really just wondering if I should mentally check that box marked "unrefreshing sleep".