Tweeti dont know what it is...i go to bed between 9:30 and 10 every night. i wake around 5am. all of a sudden, over the last 3-4 mo's, (the last 2 week been the worst) it's getting harder and hader to stay awake! i'm falling asleep in the morning on the way to work while driving. i almost hit the car in front of us at a traffic light! anythaughts. been drinking a 24oz coffee on the way...not working. took acouple spikes yesturday, while it was better, 4hrs later, i'm falling asleep at my desk