We have a student at kung fu that is around 400 lbs. He has also seen the movie and has started doing it. He is not using a juicer, but a blender, so he's making smoothies instead of juicing. But he's already lost something like 18 lbs in his first week! Keep it up. The main thing I've heard is that you feel like an absolute trainwreck for the first few days. Those are the ones you need determination to push through. Then you should start to feel much healthier with more time.