How Do Belly Buttons Work?

We're not just navel gazing -- belly buttons are seriously fascinating. Learn how they work in this episode of BrainStuff, based on this article: https://health.howstuffworks.com/human-body/parts/5-things-didnt-know-about-belly-button.htm

Learn more about your ad-choices at https://www.iheartpodcastnetwork.com

See omnystudio.com/listener for privacy information.