I practiced middle and long distance running in a sports school ... I practiced 1200 ... My experience tells you that I try to breathe with my nose, three steps and three steps in the first two laps ... I really can't stand it, but my teeth should be closed, otherwise the cold air will make it more difficult for you to breathe in your throat ... You can open your mouth properly in the third lap ... Just open your mouth casually in the last two laps.
Finally, let me talk about some basic training in my daily life. You can do it every few days. 50 squats, 4 groups (leg strength) try to run 5000 at a time, try to finish running and jogging.
That's basically it. Leave me a message if you have any questions.
O(∩_∩)O Please adopt.