Have you countered some of the debt with exercise? I recommend a brisk, highly intense workout (e.g., the scientific 7-minute workout) as soon as you wake up. It will help you get over cortisol levels and give you a nice rush of endorphins, plus nice boost of blood flow to the brain. I've found that it helps me even get over grogginess and headaches when I'm very sleep deprived.
I have not, but in speaking with other people on my team, it has been mentioned as helping a lot. It's probably a lot more effective than a bunch of coffee.
