2. Pay attention to speed control. Physical education class taught us to run when we were young. But for fitness, there is no need to run too fast. It didn't hurt at first, even if it was faster than walking. It was from this stage that I ran all the way to 10 km.
3. How to control the speed: Everyone's physique is different. The general judgment method is that you can talk to the people next to you when jogging, but you don't feel angry enough when singing. If you run like a dog, you run too fast, so you must slow down. If conditions permit, you can test the instantaneous heart rate with a heart rate meter. (220- age) *70% heart rate is almost the same, not too high.
4, running does not have to run every day, you can run for a day to rest, so that the body has a recovery process.
It depends on my personal foundation. I can easily run 3 kilometers in a week or two.