Dawn Jackson Blatner, a registered dietitian and nutritionist for the Chicago Cubs, is trying to change the meaning of the phrase, "Treat yo'self." Most people treat themselves by indulging in a gallon of ice cream or by lounging around the house, watching TV. Blatner wants "treat yourself" to mean exactly the opposite. Her definition is designed to give you more energy, help you lose weight and keep your body healthy. "It's preplanning your grocery list. It's being in the grocery store and buying foods...