Losing weight starts at the mouth. Exercising can contribute to making a diet work or not, but the most important thing is how what you eat and how much of it. In fact, if you eat the right thing, you can have a successful diet without feeling hungry. In today's society, it's difficult to know what's good and what's not good for you. There's so much variety and everything looks so good and is advertised so ingeniously, that you can hardly know what's true and what's not.