It is used to:
Increase lung capacity
For breathing exercises after surgery
Keep lungs active when lying in bed for a long time
Reduce the risk of pneumonia or mucus accumulation in the lungs
How to use:
Sit up straight.
Take the mouthpiece in your mouth and seal your lips tightly around it.
Take a slow, deep breath so that the balls rise one by one.
Hold for 2-3 seconds, then exhale.
Do this 10-15 times, several times a day (as advised by a doctor).