Can you switch to caffeine-free pop? Or is the sugar part of the problem, too? (Or do you drink diet pop? There are caffeine-free diet "colas"... :)

Once I figured out that I could lose my morning grumpiness and actually focus by downing a cup of coffee, I embraced caffeine wholeheartedly. Plus, it works wonders on barometric-pressure-related migraines. But there are limits. Nothing caffeinated after lunch, generally, unless I've got a migraine.

Everyone's different. I have a friend who can down gallons of coffee and still be half-asleep most of the day!