Losing weight is a simple mathematical formula: You need to burn more calories than you eat. Experts generally recommend creating a deficit of 500 calories per day through a combination of eating fewer calories and increasing physical activity. Over the course of a week, this should yield a loss of about 1-2 pounds of fat.
If you want to lose weight faster, you'll need to eat less and exercise more. Bottom line: 1,050 to 1,200 calories and one hour of exercise a day (but be sure not to dip below this calorie level for safety's sake). On this type of plan, you can expect to lose 3-5 pounds the first week, or more if you weigh over 250 pounds.
"Dieters who follow the plan can lose 2 pounds from diet and 1 pound from exercise each week, and even more if they have more to lose, because the more fat you have to lose, the faster it comes off," says Dansinger.
You may lose even more weight initially if you limit salt and starches.
"When you reduce sodium and cut starches, you reduce fluids and fluid retention, which can result in up to 5 pounds of fluid loss when you get started," explains Dansinger.
