Do you know what Chronic fatigue syndrome is?
I am not entirely familiar, but I know it is not due to what usually causes fatigue which is ongoing exertion.
Any idea what causes it? Ive heard of it, and of course have felt fatigue just from everyday life, but I cant say its chronic..
No, doctors still do not know the cause.  It could be biology, genetics or in someone's head from what I understand anyways.