Walking is an effective way to burn off calories. Did you know that to burn one pound of fat you need to burn off nearly 3500 calories? You can either create a calorie deficiet by eating less or burning it through exercise. It is safe to aim to burn off one pound of fat per week. Going for more is possible but not very healthy and too less than that is not motivating enough. While diet control is the most effective way to reduce calorie intake and cut down on weight, exercise helps keep off the lost weight. Over time the body gets efficient at walking and uses very little energy. So, you need to keep challenging your body by making significant changes to distance or speed of walking.