2. Do eat every 3 to 5 hours. Your body needs regular fuel, and balanced meals spaced no more than 5 hours apart keep your metabolism running smoothly. You don't need a full meal—a 150- to 200-calorie snack will do.
3. Don't "save up" for one big splurge. Your body uses calories over the course of the day and will store a onetime surplus as fat. Prepare for treats by eating regularly but having slightly lighter than normal meals.