For those who are freaking over no sugar or flour, perhaps it should say no REFINED sugar or WHITE flour. That's the basis of South Beach. You get fruit, whole grains and all kinds of low fat protein, nuts and veggies. When I'm "good", which means I'm not eating the refined sugar and white flour, I feel great. I have more energy, after a day or two the cravings disappear and my skin is even clearer. This is the only way of eating in which I don't feel hungry or obsessed with food all the time. (on some diets, you are mentally preparing your next meal all day long) If I slide, (like I did on Sunday), my energy goes to 0 within a day,and I just feel crabby. Seems like I'm more affected the older I get. I've done this long enough that donuts look icky to me. I don't think I can ever do it long enough, though, so that an Oreo flurry doesn't look like the best thing ever...