A college student in Zhengzhou said that it is necessary to run in the morning on foggy days. School: It's not compulsory, but you can run on weekends. Is it necessary to run in the morning in college? Foggy days also require students to run in the morning. Why do students run in the morning? Because if you don't run in the morning, you won't get any credits. It can be said that the school also wants students to exercise. After all, does a day depend on the morning? Physical exercise can strengthen students' physique.

But what I want to say is that although the castle is good, it is still not good for your health in this foggy weather. After all, the concentration of PM2.5 is high in foggy days, so it is definitely not a good thing for students to run in the morning, and it may also cause respiratory diseases for students. If the school really wants to ensure students' health and exercise, it is better to change the morning run to wait for the sun to come out and the smog disappears. Actually, it is unnecessary to run in the morning after exercise.