B-Arm Sonmol- Deep Breathing Lung Exerciser| Respiratory Trainer for Respiratory Therapy| Inspiratory Expiratory Volume Exerciser for COPD, Dyspnea, Asthma, Pneumonia and other Respiratory Disorders

I was surprised to see how well this small breathing exerciser which not only improves inhalation muscles but also exhalation muscles as well which is a unique feature this device provides so I'm grateful to have found such a device which helped me recover my lung health from severe asthama within few months.

Initially I was having doubts whether to buy this but after seeing it works for both inhalation and exhalation lung muscles I finally decided to buy and it's the best decision I have made. Not only was I able to breathe better but also I could feel less lazy because as soon as I finish excersising this, I am able to feel brisk and active. 10/10 recommeded and worth every penny.