Take a deep breath and hold your breath. If you can hold your breath for half a minute, it means that your cardiopulmonary function is better. If you can only hold your breath for more than ten seconds, it means that your lung function is not good.
2. "One-second quantity"
In addition to vital capacity, we can also measure the "one-second volume", which means measuring the amount of gas you can blow out in the first second. Healthy adults can blow out about 3 liters of gas in the first second. If it is too little, it means that your lung function is not very good.
3. Blow-fit test method
Light a match and blow it at a distance of 15 cm. If it doesn't go out, it means there is something wrong with your lung function. If it doesn't blow out at a distance of 5 cm, it means that your lung function is too poor.
4, climbing stairs test method
Now people take the elevator up and down the stairs, and we can also measure our lung function by climbing the stairs. We can leisurely climb to the third floor. If you don't feel the symptoms of chest tightness and shortness of breath, then your cardiopulmonary function is better.
The main function of the lungs is breathing, so we should pay attention to the exercise of the respiratory system at ordinary times. We can usually do more chest expansion exercises, and the corresponding color of the lungs in the internal organs is white. We can usually eat more white food, such as lily, pear, white radish and so on.
In the case of air pollution such as windy and foggy days, we'd better reduce the number of times we go out.