It is recommended to start slowly. In fact, for the body, what it wants is not speed, but exercise, step by step, and patience. You can download a splash with a good pair of jogging shoes. Start running for neither too long nor too fast. The speed is 6-7km/h, three times a week, and the first five runs 10- 18 minutes. The running time is set to 15-20 minutes. Because I haven't exercised for a long time, my legs will be sore. I will stick to this speed and time until my leg hurts, and then I will keep the speed constant until my leg hurts. I will extend the running time to 20-25 minutes. When I get used to it, I will increase the speed to 10km/h, keep it for 20-25 minutes, and then slowly. You can also set a goal later. For example, I have set a goal of 4 kilometers now, 16 minutes can be completed.
In addition, every time you speed up or add time, it must last for more than 3 times. Don't suddenly speed up or add time. Your body needs a process and time to adapt. I hope you can love this sport.