Pulmonologist Dr. Ravi Kalhan answers the internet's burning questions about our lungs. What happens to your lungs if you vape? How do our lungs know the difference between oxygen and carbon dioxide? How much snot can your lungs hold? Does lung cancer only happen because of smoking? Dr. Kalhan answers all these questions and much more!

Director: Lisandro Perez-Rey
Director of Photography: Francis Bernal
Editor: Louville Moore
Expert: Dr. Ravi Kalhan
Line Producer: Joseph Buscemi
Associate Producers: Paul Gulyas; Brandon White
Casting Producer: Nick Sawyer
Camera Operator: Eric Brouse
Audio: Sean Paulsen
Production Assistant: Ryan Coppola
Post Production Supervisor: Alexa Deutsch
Post Production Coordinator: Ian Bryant
Supervising Editor: Doug Larsen
Additional Editor: Paul Tael
Assistant Editor: Justin Symonds

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