What is the best exercise for lungs?

Hello there, I'm curious to know what the most effective exercise is for strengthening and maintaining healthy lungs. With so many options available, from cardio workouts to breathing exercises, it can be overwhelming to choose the right one. Could you please provide some insight into which activities are particularly beneficial for lung health and why? I'm eager to learn more about how I can optimize my respiratory fitness and overall well-being through regular exercise.