Emphysema is fine to run and exercise when lung function is not particularly severely reduced. But emphysema is caused by the presence of too much air inside the lungs, which cannot be expelled causing the alveoli to be burst. So in this case, speed running is not recommended when running. Because when speed running, in order to increase the speed, you generally have to hold your breath and make a strong effort to increase the speed. At this time, if the inhaled air is too much in the lungs, it will lead to the destruction of the already damaged lung structure, like the emphysema, because there is pressure to destroy it more, which is not good for the recovery of emphysema. In addition, when you have emphysema, you should review your lung function regularly, and once you have a serious lack of oxygen, it is not recommended to go running, but to walk as a better exercise. If you run when you have emphysema, and if you breathe faster, it is recommended that you try to blow as much as possible, without making a particularly small mouth shape, as long as the O-shape is blowing out the air directly. Using this method of breathing will not cause excessive pressure on the emphysema, causing it to worsen.