The most fundamental principle of Herbalife weight management series products is to replace the traditional breakfast and dinner with two kinds of low-calorie (below 200 calories) high-protein nutritional milkshakes, and to prevent the accumulation of excessive garbage calories from the source through the control of calorie intake. The human body needs to consume about 2000-2500 calories every day. In order to ensure the physiological function and metabolism of human diet, it is necessary to ensure at least 1000 calories intake. Nutritional milkshake is less than 200 calories for one meal and 400 calories for two meals, while normal lunch can provide about 600 calories, so it has reached the minimum calorie intake required by the human body every day, and the difference in total calories required for one day is provided by burning fat. Calories per 7700 calories = 1 kg of fat.