"An apple a day keeps the doctor away." Ok, so we know nowadays that there isn’t much scientific truth in that, except for the the fact that apples are good for you. This is because they contain lots of fibre. Fibre is one of the best nutrients to keep hunger at bay. Apples are also low in calories and fat, which makes them a great snack. Add a diced apple to your morning oatmeal for a powerful breakfast.