In daily life, many people like morning exercises. Petrochemical Lunjian experts remind that proper morning exercises can make people full of energy all day, but morning exercises must be scientific. Don't do morning exercises on an empty stomach or full stomach. You can eat something, have a rest after half full, and then go outdoors for morning exercise. We should not advocate "smelling chickens and dancing". Some people get up at three or four in the morning to exercise, and then continue to sleep, which is not only easy to inhale dirty air, but also makes the biological clock disorder, leading to fatigue and premature aging. You'd better wait until the sun comes out before you start doing morning exercises. Because the air pollution on the ground is the heaviest before sunrise, there is little oxygen at this time, so the green plants start photosynthesis after sunrise, sucking in carbon dioxide and spitting out oxygen, and the air is fresh. The temperature is too low to do morning exercises. If the temperature is too low or the temperature drops suddenly in the early morning in autumn and winter, it is not suitable for morning exercise, especially for the elderly and infirm, who have poor body temperature regulation ability and are prone to catch a cold and get sick. The scene of rain and fog is not suitable for morning exercise. The current "fog" is different from the previous "water mist". Because of the serious pollution, it is mostly "pollution fog". Tiny droplets contain a lot of pollutants and pathogenic bacteria. When the amount of breathing increases in the morning exercise, more pollutants will be inhaled, and in severe cases, symptoms such as dyspnea, chest tightness and palpitation will occur. This article is transferred from www.huashif.com's On the Sword of Petrification.