Yawning: This will make YOU do that (sorry)

Dave & Chris can't stop opening their mouths, but you already know that. This time they are doing that tired (or scared?!) thing when they do it, and it turns out that nobody can agree WHY we do it. We share some theories, some rhymes, then somehow dive into hiccups, salt poisoning, and the reliability of Japanese trains.  WARNING: THIS EPISODE CONTAINS LOTS OF YAWNING AND WILL DEFINITELY MAKE YOU YAWN. You can see/judge our yawns on YouTube and Spotify. Follow us on the socials: @themundane.uk Support us: https://ko-fi.com/themundane   Sources: https://www.bbc.co.uk/future/article/20140811-warning-this-may-make-you-yawn  https://toddkashdan.medium.com/8-bizarre-scientific-facts-about-yawning-81334d48d940   Credits: Hosted by David Hadland & Chris Wells Produced & Edited by Chris Wells Theme Tune by Niall Murray Graphic Design by Lauren Hand