Some gesticulations come naturally -- scratching your head when you're thinking is so common that it's basically a cliche. But why? Learn what researchers have to say in this classic episode of BrainStuff, based on this article: https://people.howstuffworks.com/why-do-scratch-heads-when-were-thinking.htm

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

See omnystudio.com/listener for privacy information.