While I understand where tbj is coming from, not drinking caffeine might be a terrible thing to do if drinking caffeine in the morning is what you are used to. Depriving yourself of at least a moderate amount of caffeine if you are used to drinking it could cause headaches or other problems that would distract you. I think moderation is the key, though. If you normally drink a cup of coffee in the morning, drink one. But only one, not three cups for that "extra boost". You'll have enough of a boost from adrenaline.
Definitely eat breakfast, just make sure it's not carb-heavy, as you don't want to sleep through sections 2 through 5.