Blushing from embarrassment is governed by the sympathetic nervous system, which governs involuntary processes. Although we know how people blush, we still don't understand why. Check out the theories of blushing in our HowStuffWorks article.
Learn more about your ad-choices at https://www.iheartpodcastnetwork.com

Selects: How Bras Work
53:06

Let's Thank Universal Pictures for Monster Movies!
43:45

Short Stuff: The Retirement Curse
12:25