I used to work for the firm that sells "The Vest", which helps people with cystic fibrosis and other lung problems clear their airways (I worked on a different

I used to work for the firm that sells "The Vest", which helps people with cystic fibrosis and other lung problems clear their airways (I worked on a different product). It rapidly inflates/deflates to vibrate the chest cavity (not unlike attending a metal concert and standing in front of the speaker stack) to dislodge mucus. Using it can significantly increase the life span of people who haven't/can't have a lung transplant. https://www.youtube.com/watch?v=2rZbDcPiJv0 https://www.youtube.com/watch?v=2rZbDcPiJv0