My husband has emphysema which, according to his doctor, is from many years of smoking. He was told that if he "exercised his lungs" using some kind of breathing machine, it might help. Have you ever heard of such a thing?

Your husband's doctor may be referring to a device called an inspiratory muscle trainer. This device creates resistance when you breathe in. You can control the amount of resistance. The device has been shown to help strengthen breathing muscles and improve exercise tolerance in people with and without emphysema. You only need to use it a few minutes a day to get benefits.

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