Can you eat a healthful fast-food breakfast? It’s not exactly simple, but there are some choices that are the lesser of several evils. For starters, you’ll need to know your budget ... your caloric budget, that is. The number of calories you should be eating for breakfast really depends on your daily caloric budget. For men, that is roughly 11 calories per pound, and for women it’s about 10 calories per pound (depending on such factors as age, height and activity level). For a more accurate daily caloric budget you can use our calculator. Breakfast should be about 25 percent of your daily calories. That means if your total caloric budget is 1,600 calories, your breakfast should be no more than 400 calories. So let’s compare some fast-food options for “the most important meal of the day.”