Aww! I think this is a tricky subject .

Aww it is somewhat tricky subject, food for brain that is. PS. During the fasting one of the things that also happens towards the end of a fast is that the body produces ketones and those are brains prefered food! Your body may go into ketosis after just 12 hours of not eating, which many people do overnight before they "break fast" with a morning meal. (A midnight snack obviously sabotages this process.)