Replacing two meal a day with cereal is NOT a good idea. It is way too few calories for ANYONE to eat and ultimately it will send your body into starvation mode and you won't lose anything anyway..other than water weight that is. Basically, if you do it for a week, yes, you might well lose weight but it's only going to be water weight and what is the point of that? It will be back in 2/3 days. This is a 'diet' plain and simple, and as any sensible person knows DIETS DON'T WORK...take the time to learn how to eat the correct amount of calories a day in the right portions and exercise often. Works much better than cereal...