To make the diet as effective as possible, it is recommended that you start a fasting day on any product that does not fall into the category of junk food, for example, an apple or kefir. what liquid to drink? on this diet it is extremely important to drink only high quality water. purified drinking water with an average salinity is well suited. you can drink and melt water melted at room temperature no more than 7 hours ago, because it is useful due to the absence of impurities of hard salts. it is important to note that drinking water should not be too cold, because in this case it will slow down the metabolic processes. the optimum water temperature is 30-38 degrees. as for the restrictions, it is necessary to completely abandon unboiled tap water, since it contains contaminants from the internal surfaces of pipes, bacteria and chlorides, which will have a triple negative effect on the body against the background of low-calorie nutrition.