If this old saying is true, then I' m a bowl of muesli because that' s what I had for breakfast. Obviously I' m not, but there' s a lot of truth in the proverb, though perhaps it should be modified to read" You are what and how you eat" . Food and eating habits are two of the most defining traits of a people and culture and, though Britain has a rather bad reputation in this area, meals have always been a very important part of our society.