advertisement will appear in and August Popular and Women's This Late July Weeklies Fats for Fitness! There are three things about fats that are useful to know: FIRST Fats give you warmth and energy. So, indeed, do the sugars and starches. But fats are digested more slowly and they tend to prolong the digestion of other foods taken at the same meal. That is why it is good to finish, say a breakfast of porridge, with a slice or two of bread and butter or margarine. Your meal satisfies you for longer: you don't get that hungry feeling in the middle of the morning.