The key is to burn more calorids through exercise and to knock calories out of your diet. "Eating just 200 fewer calories per day could add up to losing 20 pounds in a year.
Spread out your calories intake during the day
It's harder for your body to utilize excess calories that are consumed at one time. So instead of consuming the bulk of your calories at dinner, which is what many people do, it's better to allot 500 each for breakfast, lunch and dinner and to include two 150 calorie snacks- and burn them off throughout the day.