Think smaller portions. Serving sizes have ballooned recently, particularly in restaurants. When dining out, choose a starter instead of an entrée, split a dish with a friend, and don’t order supersized anything. At home, use smaller plates, think about serving sizes in realistic terms, and start small. Visual cues can help with portion sizes—your serving of meat, fish, or chicken should be the size of a deck of cards. A teaspoon of oil or salad dressing is about the size of a matchbook and your slice of bread should be the size of a CD case.