Yes and no. It is willpower/decision making fuel but there is no change in energy use. http://www.nytimes.com/2011/08/21/magazine/do-you-suffer-from-decision-

Yes and no. It is willpower/decision making fuel but there is no change in energy use. http://www.nytimes.com/2011/08/21/magazine/do-you-suffer-from-decision-fatigue.html?_r=3&pagewanted=all& http://www.nytimes.com/2011/08/21/magazine/do-you-suffer-fro...