空气质量在进行体育锻炼时首先要考虑到早晚、阴晴天、气压、风力与风向与空气污染等因素。因为这些因素与空气质量有直接的关系。在阴天、大雾、气压底、风力比较大、有空气污染的时候是不宜进行锻炼的。一般在大中城市，早晚在上下班的时候进行锻炼也不好。因为这个时候汽车 Air quality during exercise must first consider the morning and evening, cloudy and sunny days, pressure, wind and wind and air pollution and other factors. Because these factors are directly related to air quality. In the cloudy, fog, pressure at the end, the wind is relatively large, when air pollution is not suitable for exercise. Generally in large and medium-sized cities, sooner or later, when work is not good at work. Because this time the car