Here is the book I read recently on this subject that cites the biochemistry behind "willpower."
http://www.amazon.com/Willpower-Rediscovering-Greatest-Human-Strength/dp/1594203075The brain cannot make its own fuel. It has to come from the blood stream. That means sugar.
My sister is a vegan and very health conscious and will probably think I am horrible if I let my son eat candy bars and drink soda.
Humans are built to eat meat, eggs, blood, insects, blubber, internal organs, roots, berries, in fact, anything. Kids especially need fatty, nutrient dense foods to grow right.
