An incentive spirometer
is a hand-held device that helps people to take slow, deep breaths. It's like exercise
equipment for the lungs to keep them strong and working well.
Your health care provider has set a marker for you. Your goal is to keep the piston
(the blue disc in the main chamber in the picture above) at your marker as long as
possible with each breath.
Before you know it, you'll be a pro!