There are several reasons:
1. unreasonable diet. When the body consumes too many calories or lacks nutrition, it will lead to physical dysfunction. Excessive smoking, excessive drinking, lack of sleep, lack of exercise, depression, psychological disorders, air pollution and long-term exposure to toxic substances can also appear in this state.
2. Insufficient rest, especially lack of sleep. Irregular daily life and abnormal work and rest have become common reasons. For teenagers, movies, internet, games, dancing, playing cards, mahjong, burning the midnight oil and other entertainment often disrupt the law of life; Adults sometimes have fun (such as playing cards and mahjong) and take care of patients, which will affect their rest.
3. Great psychological pressure, great pressure. White-collar workers, in particular, suffer from insufficient physical exercise and physical exhaustion.
4. Long-term negative emotional impact.
5. Overdraft of energy and physical strength caused by excessive fatigue. Due to the increasingly fierce competition, people use their brains excessively, and the main organs of the body are in an abnormal load state for a long time.
6. Self-aging of human body. It is characterized by physical exhaustion, lack of energy and reduced social adaptability.
7. Early stage of modern diseases (cardiovascular and cerebrovascular diseases, tumors, etc.). ). Before the onset, the human body will not have organic lesions for a long time, but functional disorders have occurred, such as chest tightness, shortness of breath, dizziness, insomnia, forgetfulness, etc.
8. The low tide period in the human biological cycle. Even healthy people will be in a sub-health state in a certain period, such as women's irritability, anxiety, emotional instability and excitability before menstruation.
In addition, IT workers engaged in computer work are also the main group of sub-health. Because of long-term computer operation, it is easy to cause many computer diseases. Such as mouse hand, cervical spondylosis, screen face and so on. IT health people suggest that computer workers should get up and have a rest every working hour 1 hour to stretch their muscles and stay away from sub-health. We should strengthen physical exercise at ordinary times, don't always watch the computer, and use it as little as possible when not in use.