Losing weight should be harmless to your health. Traditionally, it is usually necessary to choose a specific time and place and fast for 7- 14 days. Do valley exercises, etc. Guo's Taoist doctor adopts a unique traditional Taoist method, which eliminates impurities in the body, adjusts the metabolic system of the human body and purifies the blood by not eating whole grains for a period of time, thus improving the internal environment of the human body and enhancing the immunity and self-healing ability.