Losing weight for as little as 4 weeks will have a big impact on your quality of life. You may not realize it, but many of us are under the false impression that you need to lose significant amounts of weight to look better. Not so. If your goal is to keep your body a healthy size, you don't need to lose any of that body fat. You have a very effective way of losing a whole lot of body fat without losing any of your lean mass. The most important part of losing weight is doing so gradually, ideally over time. While your body will undoubtedly experience a number of challenges when you lose weight, you will find yourself feeling much better, both physically and mentally.