Dr. Oz's 7 Rules for a Healthy Vacation

Enjoy an Appetizer

Conch fritters, po'boys, deep-dish pizza—vacation foods are usually worth the splurge. But here's a trick to avoid overeating at dinnertime: Snack first. When researchers at Pennsylvania State University fed subjects apple slices before a meal, they ate 187 fewer calories overall. A bowl of soup had the same effect—subjects ate 20 percent fewer calories. In summertime, I recommend a nice bowl of chilled gazpacho.