2. Running opportunities have a mode of choosing exercise. I suggest you choose according to your physical fitness and exercise. As for the treadmill at home, I suggest you start the quick start mode, so that you can press other modes at any time during exercise, so as not to fall down because you can't change the mode because of the high exercise intensity.
When running on the treadmill, remember to keep your eyes on the front and not look around. It's best to put something right in front of you so that you can watch it all the time when you run, so that there will be no deviation during the exercise and you will be thrown out of the exercise belt by the treadmill.