Every autumn, we instinctively start preparing for the colder months. We get the winter clothes out of storage, check the heating, sweep the chimney or clear the wood-burning stove. Perhaps we service the car before the icy weather arrives and stock up the cupboards with warming foods. We know that winter brings different demands, so we prepare for them. But how much thought do you give to preparing your body for winter? Particularly your digestive system? After all, your dig