This kind of thing was very common when I was training in a sports school. Actually, it's nothing. The coach said it was normal. If you can hold on, you don't have to worry. Breathing adjustment, generally three steps a breathing exercise, you can also try to take a deep breath. If you really can't stand it, you can slow down a little, but it often causes sudden stomach discomfort. Never stop at once unless you keep running slowly. Slow down the sitting breathing adjustment, pay attention to the frequency, breathing exercise should be combined with running exercise.
I used to be a long-distance running expert in our team ~ ~ ~ o (∩ _ ∩) o ~
400 meters 56 seconds
If it is 12 km, almost no one can beat me.
Mainly the coordination of breathing.
Hope to adopt
\(^o^)/~