If I am on a 2500 calorie cut diet for several weeks and have a cheat day of 6000-9000 calories in the 4th week why won't i gain 3 pounds of fat as a result of this cheat day. if a pound is 3500cals and i eat twice that how is it i come out unscathed with the exception of added water weight for a day or two? Is the body not processing all the food i ate that particular day?