It’s harder for your body to utilize excess calories that are consumed at one time, “explains Catherine Christie, Ph.D., R.D. director of nutrition programs at the University of North Florida in Jacksonville and coauthor of Fat Is Not Your Fate (Fareside, 1005). So instead of consuming the bulk of your calories at dinner, which is what many people do, it’s better to allot 500 each breakfast, lunch and dinner and to include two 150-calorie snacks and burn them of through the day.