1. Sit up straight or in a semi-Fowler's position to allow for full lung expansion. 2. Hold the device upright and place the mouthpiece in your mouth, sealing your lips tightly around it. 3. Inhale slowly and deeply through the mouthpiece, trying to raise the indicator to the target level. 4. Hold your breath for a few seconds, then slowly exhale and allow the indicator to fall. 5. Repeat the process about 10 times an hour while awake, as recommended by your healthcare provider.
