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2. Claim the Middle Piece of Cake

Let your coworkers have the coveted corner pieces at the next office birthday party. "They're covered with about three times more icing than the middle ones," says Wesley Delbridge, a registered dietitian and spokesperson for the Academy of Nutrition and Dietetics. Ask for a middle piece (and one that doesn't have any of those frosting flowers, either) and you'll still get enough icing to satisfy your sweet tooth. Two tablespoons of store-bought vanilla frosting has 138 calories, and picking from the middle will likely save you that much or more.