text:  We definitely have an understanding of the brain requiring certain things. There's two layers of it. You need four functions. You need the right foods, the vitamins. You need the right activity, the right thought process, which is actually doing skills like puzzles and things like that that activate key functions in the brain that we don't normally utilize throughout our day unless people are paying attention. So low brain function has nothing to do with necessarily brain size. A person can be tiny and short, dwarf or otherwise, and it makes no difference to them because they have a larger head.