You can do jogging and brisk walking training. At the beginning of the warm-up, walk for a few minutes to excite your muscles and heart and lungs. Jogging can effectively exercise cardiopulmonary function, pay attention to breathing rules, and don't hold your breath or breathe irregularly, otherwise you will imagine the running quality and get angry easily. Because you don't need to lose fat, you should focus on cardiopulmonary exercise, so you can speed up your running slightly or run at variable speed if your physical conditions permit, which will be tiring, but it will have a good exercise effect on muscles and heart and lungs.

Keep exercising for more than 40 minutes every day. If you really can't stick to it, you can take a quick walk for a while to adjust your body function and then run.