Running 800 meters is not tiring, and the skills of fast girls are as follows:

1. Adjust breathing: When running, breathe with your mouth and nose at the same time, and put your tongue on the palate to moisten the air.

2. Pace and rhythm: When running, you can try to count the beats while running.

3. Distribution of physical strength: When you run 800 meters, you should distribute your physical strength reasonably. At first, you should run at medium and high speed, then slowly adjust the speed and rhythm, and finally you can accelerate appropriately when sprinting.