My lung volume was of about 64 – 67% two years ago. I had bronchitis all the time as a child. As soon as it became winter, I got sick. This continued into adulthood. Through the 25 hrs course and the two Pranayama workshops I learned to activate my lungs and give my lungs the space they need. Holding my breath is no longer difficult and I haven’t been sick since I was in India in February 2020. And I am also no longer so susceptible to dust