Let's talk about the vagus nerve, because if you've been on the internet for more than five minutes, you've probably been told to "hack" it, "reset" it, or gently whisper affirmations to it while dunking your face in ice water. What is all that supposed to do? Related HCT episodes: Mysteries of the Microbiome: https://youtu.be/ywFJUcGyMlI Be sure to check out our podcast! https://www.youtube.com/playlist?list=PLkfBg8ML-gInFaYyYhKLBp2u7h5IojTw4 Other Healthcare Triage Links: 1. Support the channel on Patreon: http://vid.io/xqXr 2. Check out our Facebook page: http://goo.gl/LnOq5z 3. We still have merchandise available at http://www.hctmerch.com 4. Aaron's book "The Bad Food Bible: How and Why to Eat Sinfully" is available wherever books are sold, such as Amazon: http://amzn.to/2hGvhKw Credits: Aaron Carroll -- Writer Tiffany Doherty -- Writer and Script Editor John Green -- Executive Producer Stan Muller -- Director, Producer Mark Olsen – Art Director, Producer