Interestingly special K is actaully one of the highest calorie cerials on the market. The only reason they recomend it for a diet (meal substitution) is cause its fortified with vitamins and minerals. But TBH if you want to opt for that sort of diet your better off doing the 'wheatabix week' only better with oatabix as oats clean out the bowl, so a less invasive colonic lol! just have them for each meal, (oats are a lot more filling than wheat as well) and add things like fresh or dried fruit or even with a smoothie tipped over them, and if you feel super healthy opt for soya milk, if not go for skimed milk, then a healthy low fat dinner.