If there is no balloon, you can do deep breathing exercise, keep your body upright, relax your muscles, inhale through your nose and exhale through your mouth. You can practice deep and long exhalation until you exhale, and then inhale naturally. The ratio of breathing time to inspiratory time is 2∶ 1 or 3∶ 1, and the breathing frequency is about 16 times per minute.
Extended data
Balloon blowing method:
Take a deep breath slowly through your nose, hold your breath for about 1 second, and then blow into the balloon mouth until you stop blowing, three times a day, each time for 10 minute. Try playing the drum once. Abdominal breathing requires that the abdomen bulge when inhaling and descend when exhaling. When breathing, the chest does not change much. Blowing a balloon doesn't mean blowing fast or much, as long as you try to blow the air out.
Reference source: Health News-Experts suggest that lung cancer patients can blow balloons for functional training.
People's Network-Lung Cancer Rehabilitation Do Breathing Exercise
People's Network-Nourish your life first! Small coup of squatting and blowing balloons to actively cough up the lungs in winter