The advice emanating from the scientific community and media used to be pretty straightforward. Eat three meals a day. Cut down on snacks, and always have a big breakfast. However, while this might be the conventional wisdom, many scientists are breaking ranks, claiming that the evidence doesn’t seem to prescribe fixed eating patterns. The vast majority of people, it seems, eat when the culture says that they should. It has nothing to do with the optimal solution for their biology.…