How to Improve Lung Health with Breathing Exercises Practice Diaphragmatic Breathing: Breathe deeply from your belly to maximize lung capacity. Try Pursed-Lip Breathing: Inhale through your nose, exhale slowly through pursed lips. Incorporate Box Breathing: Inhale, hold, exhale, and pause for equal counts (e.g., 4 seconds each). Do Breath-Holding Drills: Gradually increase the time you hold your breath. Use a Spirometer: Strengthen your lungs with this handy device. Stay Consistent: Practice daily for best results. Breathe deeply and boost your lung health!