According to Fitness Magazine, breakfast switches your metabolism from idle to high speed. This is the only time of the day when your body is primed to turn calories directly into muscle (thanks to your high level of cortisol in the a.m.) So take advantage of this and eat up! I guess the phrase holds true: "Eat Breakfast like a King, Lunch like a Prince, and Dinner like a Pauper!"
Source: Supercharge Your Metabolism
