Any breakfast is better than no breakfast, but try not to have doughnuts or pastries all the time. They're high in calories, sugar, and fat. They also don't contain the nutrients a kid really needs. And if you have a doughnut for breakfast, you won't feel full for long.Foods made from grains are an important part of a healthy diet.From breads to cereals and from rice to popcorn, grains provide a nutritious source of carbohydrate.