While following this diet, a dieter is allowed to consume only specific kinds of juices and purees. In most of the popular diets, a dieter has to drink six to eight glasses of lemon water throughout the day, without eating anything else. Some other diets also allow to include fruit and vegetable smoothies, clear vegetable juices, and herbal juices in the diet. All your meals and snacks would consist of liquids only, where you can combine the aforementioned options as per your choice.