Many people know that by doing more exercise they will be able to have a good body and will be healthier. Many people are used to exercise every day, and the amount of exercise will gradually increase. Everyone’s physique is different, so the choice of exercise should be careful. Moderate exercise is good for heart health, scientists have identified a threshold for moderate exercise, that is, when the amount of exercise exceeds this threshold, exercise loses its protective effect and becomes very dangerous. Excessive exercise significantly increases the probability of deathThe statistics found that one in 20 people who over-exercised had a significantly increased risk of dying prematurely. From the study, they found that excessive exercise can lead to “cardiac overuse injuries”, which can lead to myocardial ischemia and even death. Spring exercise should not be sweaty, in the first warm and cold conditions, in the fitness exercise in the body activity is too large, sweating too much, easy to make the body cold and cold and induced a variety of respiratory diseases; and in the spring the body needs a stage of adjustment to adapt to a larger amount of exercise. At this time if you suddenly increase the amount of exercise, the body will cause greater consumption. Exercise to develop the habit of breathing through the nose, because the nose has a lot of hair, it can filter the air, so that the trachea and lungs are not subject to dust, germs. People often ignore the importance of drinking water when exercising. In fact, at this time the climate is drier, exercise and a lot of sweating, so at this time exercise should pay attention to the timely replenishment of water. The main purpose of our exercise is to hope that their bodies are more healthy, if because of improper exercise and produce disease problems, so it is not good, exercise time and the amount of exercise need to be measured, can not try to be strong.