Simply place the mouthpiece in your mouth and adjust the single adjustment knob to provide the desired amount of air resistance. Allow your lungs to gradually become stronger. Many people experience rapid improvement. Used by rehabilitation patients, competitive athletes, COPD patients, and many others to make the lungs more effective and efficient at drawing in oxygen and expelling CO2. A new Harvard study shows that strengthening the respiratory muscles has helped many adults naturally lower their blood pressure. Easier breathing and more nourishing oxygen can lead to better sleep. It can open airways in your lungs that have become partially blocked over the years due to natural aging, pollution, poor physical condition, or smoking.
