Most of us have met someone like her. By three o'clock in the afternoon, she was completely drained. Her concentration disappeared, her body felt heavy and even simple tasks became difficult. What confused her was that she wasn't skipping meals. Breakfast was always on time, lunch wasn't a problem and dinner came later in the evening as usual. Like many people, she assumed the explanation had to be straightforward. If she felt tired all the time , perhaps she simply wasn't eating enough. It's an understandable conclusion. After all, food gives us energy. So eating more should solve the problem. But the human body doesn't work like a car that only needs more fuel when the tank runs low. The relationship between food and energy is far more interesting than that. Every Meal Has a Journey to Complete Imagine you're expecting an important parcel. It leaves the warehouse, travels hundreds of kilometres, reaches your town and finally arrives on your street. Everyth...