Aerobic exercise (swimming, running, mountain climbing) is mainly low-intensity and long-term training. Pay attention to the number of exercises per week. Don't fish for three days and dry the net for two days. Remember, stick to it.

2.

rope skipping

It also belongs to aerobic exercise, but this exercise is compared with running. There will be little pressure on the knee joint. And you can buy a skipping rope at home and stick to it every day.

3.

be on foot

You can do it every day if you walk, but you should also pay attention to the distance you walk. Walking 5 kilometers a day will greatly improve the cardiopulmonary function in one month.

4.

Climb up the building

Climbing stairs is also a good training to improve cardiopulmonary function. If the floor at home is high, you can climb the stairs every day instead of taking the elevator. Persistence will also play a great role in improving cardiopulmonary function.