“Busy work, stress, mental tension, poor rest” has almost become a buzzword for modern urbanites, and in contrast, many people are in a state of chronic fatigue for a long time, starting with listlessness and weakness, followed by insomnia, headaches, mouth ulcers, constipation, anxiety, depression, menstrual disorders, and if the development continues, it is likely to cause tissue and organ changes, inducing important organ lesions or cardiovascular diseases. If the development continues, it may cause tissue and organ lesions and induce important organ organic lesions or cardiovascular diseases, such as breast enlargement, breast fibroids and uterine fibroids in women, and liver cysts, fatty liver and thyroid adenoma in men, which will lead to cancer. Some data analysis shows that from chronic fatigue to cancer may go through the following four steps, i.e. mild fatigue → deep fatigue → internal mutation of important organs → induction of cancer, the reason is that chronic fatigue which is difficult to recover for a long time will cause the decrease of human immunity and endocrine disorders, which may activate tumor genes and make the cancer cells latent in the body grow rapidly, induce organ cancer and gradually develop into cancer; relevant data suggest that Digestive tract tumors are closely related to chronic fatigue and constipation. Therefore, to prevent cancer, we must block and eliminate fatigue before the chronic progress of fatigue to the third step, especially for people over 40 years old. If you always want to yawn, stretch and forgetfulness, it means that the body is in a state of mild fatigue and the body is prompting it to rest by yawning and so on. The way to improve is to take five deep breaths and eat a small amount of sweet food to increase the concentration of oxygen in the blood as well as raise blood sugar levels. Deep fatigue, no appetite for food, grinding teeth when sleeping, depression, anxiety, fatigue, poor sleep, easy to wake up, dreamy, hair loss, at this time has reached a state of subhealth, should try to slow down the pace of work, it is best to do 3 times a week exercise, before going to bed can take a hot bath to make the body as relaxed as possible. When this stage is further developed to the body tired of disease, the human tissue and organs may issue a protest, at this time you will find continuous shoulder, back and waist pain, headache, dizziness, tinnitus and ear swelling, chest tightness and palpitations, menstrual disorders, insomnia, mouth ulcers, chronic pharyngitis, periodontitis, acne, folliculitis, chronic gastritis, constipation and other disorders. At this time, in addition to paying attention to rest, you should also seek early medical treatment for the discomfort, so as not to miss the treatment and delay the disease.