Hello,
I'm 24; just like in title - I am waking up very fatigued with some really bad brain fog (I'd call it "dry feeling") and difficulty concentrating. I often wake up at the same hour - no matter what time I fell asleep on the former day. Whatever I do - the fatigue won't go away by itself for entire day (although its less uncomfortable in the evening). The only way to relieve the feeling is to force myself somehow to fall asleep (and then I sleep for an hour or two) - after that I feel really refreshed and "ready to live". Falling asleep is really difficult in this state, but I've found that some "extensive" physical exercise (like 60 knee bends) helps me to do it.
This all has been going for years, and it affects my life really bad. I can't get a job because of that - my clarity of thinking is very affected.
I've been on some antidepressant drugs, but they don't seem to help much. And I don't feel depressed. Some general blood tests didn't show any abnormalities. I'd rather avoid meds unless I have no other option; I really would like to find out the underlying cause.
I have also other problem - a bit larger meal makes me really tired and somewhat sleepy (but not enough to fall asleep) for about an hour.

Thank you very much for reading and for any advice.