Breathing LessonsEvery day, our lungs circulate 11,000 liters of air, provide us with life sustaining oxygen, and allow us to speak, sing, and smell. It's no secret that our lungs are one of our most vital organs, and yet most of us pay them little attention. The COVID 19 pandemic, however, has reminded us of the importance of our lungs, and sparked interest in their function and the risks they face. In Breathing Lessons, leading pulmonologist and national