First, fitness long-distance running can improve the function 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, fitness long-distance running is conducive to disease prevention. Fitness 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, fitness long-distance running is conducive to a comfortable 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 exercise in a relaxed and happy way, so it is very conducive to alleviating 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.

Long-distance running exercise plays a very good role in cultivating people's tenacious will to overcome difficulties and temper hard work. Especially for those who are afraid of the cold in winter, love to sleep late and don't want to exercise, let people taste the benefits of long-distance fitness exercise.

Fourth, healthy long-distance running needs to pay attention to speed, try to keep it at a speed that your body can adapt to, and avoid too intense long-distance running, especially if you don't run often. Your hands and feet may be sore for the first time the next day because of lactic acid produced by strenuous exercise.

Extended data:

Fitness is a kind of exercise, such as all kinds of unarmed aerobics, rhythmic gymnastics, rhythmic gymnastics, and all kinds of self-resistance movements. Gymnastics can enhance the strength, flexibility, endurance, coordination and control of all parts of the body, thus making the body strong.

References:

Baidu encyclopedia fitness