The so-called diet control means that the diet should be moderate, not arbitrary, and pay attention to the science and methods of diet. First, the diet should be moderate. This means that people should not eat too much or too little, but should be just right and hungry. Second, certain foods, such as spicy and greasy foods, need to be restricted or taboo. The law of life is to make a reasonable life plan and not to do anything beyond your physical, mental and sexual abilities. Mental internal defense refers to relaxing the body, trying not to think about anything, focusing on yourself, or focusing on an external point.