An incentive spirometer is a device that can help you strengthen your lungs. Learn how it works, ... If the spirometer has a goal indicator, use this to guide your breathing.

For example, for a 40-year-old woman who is 5 feet 4 inches tall, the incentive spirometer goal by age would be 2,300 mL. For a 60-year-old man who is 6 feet tall, the normal incentive spirometer ...

Typically, the incentive spirometer will have markings by the indicator, such as arrows, to show a person’s goal measurement and where they should aim to keep the indicator.