If you burn 500 more calories than you eat every day for a week, you should lose about 1-2 pounds.
If you want to lose weight faster, you’ll need to eat less and exercise more.
For instance, if you take in 1,050 to 1,200 calories a day, and exercise for one hour per day, you could lose 3-5 pounds in the first week, or more if you weigh more than 250 pounds. It’s very important not to cut calories any further — that’s dangerous.
Limiting salt and starches may also mean losing more weight at first — but that’s mostly fluids, not fat.
“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,” says Michael Dansinger, MD, of NBC’s The Biggest Loser show.
via How To Lose Weight Fast and Safely – WebMD – Exercise, Counting Calories, and More.