Generally speaking, long-distance running is not only harmless to the body, but also has many benefits: First, long-distance running can improve the functions of respiratory system and cardiovascular system. Scientific practice has proved that long-term rhythmic deep breathing can make people inhale a lot of oxygen. If the oxygen intake exceeds 7-8 times of usual, it can inhibit the growth and reproduction of human cancer cells. Secondly, long-distance running also improves the oxygen supply state of myocardium, accelerates myocardial metabolism, thickens myocardial fibers and enhances myocardial contractility, thus improving the working ability of the heart.

Second, long-distance running is good for disease prevention. Long-distance running accelerates blood circulation and cleans up harmful substances in the excretory system, making it difficult for harmful substances to stay and spread in the body. According to the determination,/kloc-running 3000m in 0/6 minutes or 5000m in 25 minutes can reduce blood cholesterol. This has a good preventive effect on the elderly who are prone to different degrees of hyperlipidemia, which in turn leads to arteriosclerosis, coronary heart disease and cerebrovascular disease.

Third, long-distance running is conducive to a good mood and a happy spirit. Because this kind of long-distance running does not pay attention to the outcome of the competition, it only seeks to keep fit in a relaxed and happy way, so it is very beneficial to alleviate the mental and psychological tension brought about by high-tempo and high-intensity sports in modern society. According to medical experts, this kind of relaxed and pleasant exercise can best promote the release of endorphin bark, a polypeptide substance in the body, thus causing lasting euphoria and sedation. In addition, because long-distance running makes people full of optimism, it helps to increase appetite, strengthen digestive function and promote nutrient absorption.

You should know that it is normal for athletes to have a lot of sports injuries when they retire. They just eat this bowl of rice. Their training intensity is much greater than that of us amateurs. It is not enough for a professional athlete to run 5000 meters a day. You know, when Ma Renjun trained Ma Jiajun, every day was a marathon! His strength is terrible! Many athletes are injured in highly antagonistic events, such as basketball and football!

Don't worry!