Biscuits are often baked with oils and butter, and bagels tend to be supersized - all of which can lead to calorie and fat overload. Egg and cheese sandwiches seem to be the wisest choices at most fast-food places, but sodium is still a problem. {relatedarticles}Many pack more than half of the recommended daily allowance for the day, so adjust your later meals and snacks accordingly if a fast-food breakfast is part of your daily diet.