Do Calorie Shifting Diets Work?

Most of us find diets really exciting since they prove to be the fastest ways of knocking of our extra pounds. 

We get attracted to diets that claim they can help us lose 6 pounds or more in just a week. Do all of these diets actually work? Can we actually lose weight in just a week's time? And is that healthy? To answer your questions, not all diets are genuine.