The statement that "the harm caused by sedentary is almost smoking" has attracted more and more attention from the media and the public. Greg, assistant professor of human kinematics and physical education at the University of Toronto Wells) According to the results of a recent study, if the body has been inactive for a long time, it will cause poor circulation of the lymphatic system, leading to cancer, cardiovascular disease and diabetes.

　　Wells said that many studies have proved that prolonged physical inactivity is one of the causes of long-term chronic diseases such as cancer, cardiovascular disease and diabetes.

　　Wills explained that if the body does not get enough exercise, the most direct effect is that it will cause poor blood circulation. Keeping the blood circulation smooth is an important basis for the body to fight diseases. Once the blood circulation is not smooth, it will cause disturbance of the lymphatic system circulation.

　　 He said that there are two important circulatory systems in the human body, one is the blood system and the other is the lymphatic system. The lymphatic system is mainly responsible for filtering and fighting viruses and pathogenic bacteria. It also bears the function of delivering nutrients to the muscles and brain. Therefore, keeping the lymphatic system flowing smoothly is the primary way to maintain good health.

　　Wells recommends maintaining "active exercise" for at least one hour a day. He said that "active exercise" means that the heart rate of the human body needs to be increased to the level required by the body. If walking for only one hour is not enough, the "active exercise" required by the human body is to walk at least one hour a day. Maintaining daily "active exercise" will reduce the chance of breast and colon cancer by 50%.

　　Since office workers need to sit in the office for a long time every day, Wells particularly recommends that office workers get up and move for 20 seconds every 20 minutes of sitting and working, and keep walking every two hours of work Or the habit of going up and down the stairs for 15 minutes. He emphasized that even standing for a while between work, such as meetings or phone calls, is more beneficial to health than always sitting in a seat.

　　Officers may think that it is difficult to maintain physical activity every two hours, and it does not help their mental work. Wells emphasized that physical exercise can provide oxygen and nutrients to the brain, and stimulate the brain''s functions of memory, learning, thinking and maintaining attention. He said that maintaining physical activity outside of work is not only good for physical health, but also beneficial for brain work.