Yes, if the purpose of breaking the grain is simply detoxification and health preservation, it is recommended to break the grain for about 4 times a year, and change the food for seven days+eat again for three days. Too many times will also affect your health. If it is to recuperate physical problems, such as obesity, three highs, diabetes, fatty liver and so on. It is suggested to increase the number of food changes appropriately, especially once a month for the first time, 3-5 times in a row. If the physical condition is greatly improved or healed, you can reduce the number of food changes!