Perhaps it is England's way of getting through the afternoon slump from which we all inevitably suffer.
Breakfast really is the most important meal of the day.
Eating a light breakfast gives you the energy you need to get through the day. Specifically, carbohydrates plus proteins equals long-lasting energy. Avoid fatty or sugary foods. Fat and high calories have a calming effect, and sugar results in an energy rush that doesn't last long enough. The key to drinking coffee is knowing how much to take in.