I don't understand how I can be so extremely tired but cannot sleep. I go for 24 hours at a time now without sleep. I am exhausted, I go to bed and as soon as I begin to drift off my mind sort of jerks awake and then that's it. My body is so tired but my mind doesn't seem to be. I hate to take sleeping pills all the time so I am trying to see if I can finally fall asleep on my own at some point. Does anyone else have that sensation of your mind jolting you awake? Thanks..