There are many people who suddenly stop running from the treadmill machine and immediately get off the treadmill. If the physical state changes too suddenly, they will become dizzy, and in severe cases will cause fainting.
After running on the treadmill, do not stop immediately, let alone lie down or sit down immediately. You should slow down slowly, walk on the treadmill for a few minutes, bring your heart rate down to below 120, and when your breathing is normal, get off the treadmill and stretch.