I am now almost 2 weeks into my new plan and it is working just fine. With Dukan, you are on mostly protein. Certain proteins are not allowed...low fat (no more pork steaks)..lean pork is OK. After a certain number of days you change to Protein/Vegetables. The vegetables cannot be starchy or carby. After 8 days I had lost 4 lbs but then going on protein/vegetable some came back and now down the 4 lbs again. I have lots of energy and can do the required 30 minutes of exercise per day easily...it calls for walking but in this heat - Hit 105 F a few days back, I use my Nordic Elliptical. What I have discovered is a real lack of urgent hunger. Hunger yes, but urgent no. With low fat protein and all the vegetables needed every other day, I am feeling just great. I breezed through my 30 minutes of elliptical today and burned up 400 calories.