I always tell anyone that is interested in losing weight or getting into shape.........DON'T use fast weight loss pills or try and go on a crazy diet to lose weight fast. Otherwise you will end up with lots of loose skin like this:
The type of people that want to lose weight fast are the plastic surgeons bread and butter. They love people who need a nip and tuck job after losing weight too fast. You need to not ony diet but you have to exercise as well.