1. Eat only when you are hungry

　　Many friends cannot eat on time in their lives, or do not eat when they are not hungry. The reason is "not hungry". Other friends often finish work before eating, which is unscientific. Food stays in the stomach for only 4-5 hours. When we feel hungry, our appetite will be empty. At this time, the gastric mucosa will be "self-digested" by gastric juice, causing gastritis or peptic ulcers, and weakening the body''s ability to resist disease.

　　2, thirsty Only drink

　　 Some friends don’t have the habit of drinking water. They must wait until they are thirsty. In fact, when we feel thirsty, the body is already severely dehydrated. It is too late to replenish water at this time. Water is the source of life and is more important than food in the body''s metabolic process. Physiologists tell us that every adult needs about 1500-2000 ml of water every day. Drinking a glass of water after getting up in the morning or an hour before a meal is good for your health. Water can not only wash the stomach and intestines, but also help digestion and promote appetite. The survey shows that the incidence of constipation and stones in people with frequent drinking habits is significantly lower than those in infrequent drinking. Drinking water also has a positive effect on the prevention of diseases such as myocardial infarction and stroke.

　　3. Rest after being tired

　　 is resting after being tired. It is handed down from the ancestors. Many friends have done this throughout their lives . These friends thought that they should go to rest only when they felt tired. In fact, when I feel tired, my body is quite tired. Excessive fatigue easily accumulates into illness, reduces the body''s immunity, and makes the disease take advantage of it. Regardless of whether it is mental work or manual work, after continuous work for a period of time, proper rest must be taken.

　　4. Sleep before sleep

　　 Some friends think that they should go to sleep only when they feel sleepy. In fact, drowsiness is a manifestation of the brain''s considerable fatigue. It should not wait until this time to go to bed. The good habit of going to bed on time not only protects the brain, but also makes it easy to fall asleep, improve sleep quality, and reduce the incidence of insomnia. About 1/3 of a person''s life is spent in sleep. Sleep is a physiological process of human metabolism. Ensure regular sleep, and ensure that the daily sleep time is not less than 7 hours to maintain the normal operation of the sleep circadian clock.

　　5. When you are in a hurry

　　Many friends only go to the toilet when they feel very obvious when urinating and defecating. Even if you don''t understand, you would rather hold it. Doing so is extremely detrimental to health. Urination and urination stay in the body for a long time, it is very easy to cause constipation, or overfill the bladder. Toxic substances in feces and urine are constantly being reabsorbed by the body, which is very easy to cause "self poisoning". Therefore, the habit of urinating and defecating on time can reduce the incidence of hemorrhoids, constipation and colorectal diseases.

　　6. Only lose weight when you get fat

　　With the improvement of living standards and changes in lifestyle, there are more and more friends who are obese . Many experts believe that the main causes of obesity are overeating, overnutrition and lack of exercise. Many friends spend a lot of money after obesity, and spend a lot of time to lose weight, which is very uneconomical. In fact, any current weight loss measures are very limited. Because losing weight afterwards is not as good as prevention beforehand, we can prevent it before we overweight. For example, control and adjust diet, prevent overeating, strengthen physical exercise and so on.

　　7. Treat only when you are ill

　　 "Everything is pre-established but not pre-empted". Health medicine also regards prevention as the first line of defense. When the disease has already gotten up, it has already caused harm to the body, and then the treatment will be costly. In fact, before the disease is formed, there is a signal. The sub-health state we often say is a signal. Once it enters the sub-health state, it needs attention. There are also many diseases, which are difficult to detect early by self-feeling. Only by going to the hospital for health checkups can early detection and early treatment be performed. There are quite a few friends who usually think they are not ill, and when they go to the hospital for examination, they find that something is wrong. Some hepatitis, tuberculosis, high blood pressure, heart disease and diabetes, including many A symptoms, can also be detected early in routine examinations. It can be seen how important it is for middle-aged friends to seek medical treatment without disease and to insist on regular medical check-ups.

　　8. Exercise only when you are old

　　Among the people who exercise every morning, we will notice that most of the people who participate in morning exercise are elderly people. There are very few middle-aged friends. Many middle-aged friends have no subjective awareness of active exercise. Because of this, some diseases happen prematurely to middle-aged friends. What age-related diseases such as diabetes, hypertension, hyperlipidemia, coronary heart disease are getting younger, and the prevalence of fatty liver among middle-aged friends is even more alarming. This has a direct relationship with middle-aged friends who do not participate in exercise, eat too much, and often drink alcohol.