Reasonable exercise can make people healthy and prevent diseases, but incorrect exercise mode and amount do more harm than good, leading to other diseases. Mr. Cheng, a "fitness expert", is a good example, and the muscle knot under his clothes is the best interpretation of his fitness achievements for more than ten years.

Since Mr. Cheng was admitted to the hospital, in addition to actively treating cerebral infarction, the hospital also screened Mr. Cheng for the risk factors of cerebrovascular disease, so as to prescribe the right medicine and prevent the recurrence of cerebral infarction. However, the result was unexpected. Mr. Cheng usually lives a very healthy life, has no basic diseases, no bad hobbies such as smoking and drinking, and his blood pressure, blood sugar and blood lipid are completely normal.

According to Mr. Cheng's long-term fitness habits and similar medical records in the world, the attending physician suspected that Mr. Cheng was an arterial dissection caused by improper exercise, which was an important cause of cerebral infarction in young people, so he gave Mr. Cheng an arteriography examination, and the examination results completely confirmed Dr. Zhang's judgment.

With the improvement of the quality of life, the education of medical staff and the propaganda of the media, more and more citizens have joined the army of sports and fitness. It is true that reasonable exercise can prevent many diseases and reduce the risk of many cancers, while unreasonable exercise can not only fail to achieve the expected results, but even lead to various injuries. At present, most sports enthusiasts don't have professional coaches to guide and evaluate, so it's hard to talk about reasonable exercise.

Generally speaking, exercise and fitness are beneficial to health, because it can stimulate the potential of human body, improve the reserve capacity of organs and tissues such as heart and lung, play a buffering role when human body encounters diseases and harsh conditions, maintain the balance in the body and reduce injuries. Improper exercise is a kind of injury in itself. First, it is very important to set reasonable exercise goals, and at the same time follow the principle of gradual progress in exercise, so that the body can have an adaptive process.

Secondly, the choice of exercise methods also needs to be cautious. For example, cervical diseases are not suitable for bending over, lumbar diseases are not suitable for bending over to carry loads, and for patients with stroke and hemiplegia, it is best to focus on the affected limbs and so on.