It is funny that you should post this.
I made a post a copule of weeks ago about an old accuantence of mine. The week before a competiton he would load up on protien for about 3 days the the last 2 days before the competition he would eat nothing but sweet pototoes. I personally would never recommend just eating carbs throughout the day unless you were involved in a sport that required high amounts of eneryg out pput. ( Say like a cross country runner, cycleist, ect) Unless you are doing extreme amounts of cardio your body will turn the excess amounts of carbs into unwanted fat. At least thats my take on it anyway.
IC