1、 The scientific practice of fitness long-distance running can improve the function of the respiratory system and cardiovascular system has proved that a long and rhythmic deep breathing can enable the human body to breathe a lot of oxygen. If the amount of oxygen absorbed exceeds 7-8 times of the usual amount, it can inhibit the growth and reproduction of human cancer cells. Secondly, long-distance running exercise also improves the state of myocardial oxygen supply, speeds up myocardial metabolism, thickens myocardial muscle fibers, enhances cardiac contractility, and thus improves the working ability of the heart.

2、 Fitness long-distance running is conducive to disease prevention and treatment. Fitness long-distance running speeds up blood circulation, cleans harmful substances in the excretory system, and makes it difficult for harmful substances to stay and spread in the body. According to the measurement, running 3000 meters in 16 minutes or 5000 meters in 25 minutes can reduce cholesterol in the blood. This has a good preventive effect on the elderly who are prone to suffer from hyperlipidemia to varying degrees, and then cause vascular sclerosis, coronary heart disease, cerebrovascular disease, etc.

3、 Fitness long-distance running is conducive to a comfortable mood and a happy spirit. Because it does not attach importance to the victory or defeat of the competition, it only wants to keep fit in a relaxed and happy way, so it is very beneficial to relieve the psychological tension caused by the high rhythm and intense sports in modern society. According to medical experts, this relaxing and pleasant exercise can promote the release of a polypeptide substance in the body - endorphin barking, which makes people have a continuous sense of euphoria and sedation. In addition, because long-distance running makes people full and optimistic, it helps to increase appetite, strengthen digestion function and promote nutrient absorption.

Long distance running exercise plays a good role in training people to overcome difficulties and cultivate their indomitable will to work hard. Especially for those who are afraid of the cold in winter and like to sleep late and do not want to exercise, so that they can taste the benefits of fitness long-distance running.

4、 Healthy long-distance running needs to pay attention to the speed, try to keep the speed that your body can adapt to, and avoid running too hard, especially those who don't run often. For the first time, your hands and feet may ache the next day, because of the lactic acid produced by strenuous exercise.