At the same time doing this in a class would provide you with a lot of company from other people due to which your motivation level would double. You can easily join any aerobic dance class around you and see yourself losing a lot of fat with time.
Obviously it worked for them, right? So the bottom line is most of the machines you see do not work at all and you will most likely be wasting your money.
The sophisticated method of calorie shifting will cause your body to burn fat because you eat food, as a result it is one of the only diets in which to lose 20 pounds in one month virtually effortlessly!