【Useful and Functional】: Lung Exerciser Device can help you adjust the abdominal muscles while strengthening your lung capacity, making it possible to exercise core muscles. 【Optional Resistances】: Deep Breathing Lung Exerciser allows you to find the right resistances level for your training and adjust accordingly, since it is designed with adjustable resistances. 【Increase Your Endurance】: Helps you get better endurance, Breathing Exercise for Lungs is able to improve your breath for better feelings day by day. 【Lung Capacity Augmentation】: Brings great help to decrease the accumulation resulted by body waste, Lung Endurance Trainer will reduce the buildup brought on by bodily waste. 【Better Body Performance】: As an exercise tool to build up your breathing and abdominal muscles, Breathing Trainer for Lungs helps improve your overall performance.