According to an article in the June 2012 issue of Good Housekeeping magazine, shedding pounds often boils down to a simple equation: Eat fewer calories and burn more energy through exercise. As it turns out, doing tone may help you do the other. In a recent review, Harvard researchers proposed that exercise induces changes in the brain that could help you make better choices. Your power over your drive to eat is controlled by an area of the brain that is under constant strain (think fast-food commercials or strolls by a bakery). Exercise, however, may give those parts of the brain a boost, making it easier to turn down office birthday cake, explains study author Miguel Alonso-Alonso, M.D.