Vigorous exercise generally refers to a large amount of exercise in a short period of time, heavy exercise load, very fast exercise, such as 100-meter sprint, 50-meter swim, 200-meter run, etc. are all strenuous exercise. Vigorous exercise can improve lung capacity, increase muscle content, and a certain role in improving immunity. Not all people can do strenuous exercise, if they have cardiopulmonary insufficiency, some ischemic and hypoxic disease patients, it is not suitable for strenuous exercise. Before strenuous exercise must first do a good warm-up exercise to avoid sports injuries in the process of strenuous exercise. After strenuous exercise there will still be an accelerated heart rate, wheezing phenomenon, which is a normal physiological phenomenon, it is not suitable to immediately sit down to rest, or to carry out slow activities, so that the heart rate is slowly reduced. In addition, do not immediately drink very cold things to avoid causing gastrointestinal irritation symptoms, or induce myocardial ischemia performance.