Season 2 · Episode 1664
Why Your Face Leaks Before Your Brain Approves
Why do we cry at sad movies or laugh at bad jokes? New research reveals how facial expressions evolved as a two-way communication system.
My Weird Prompts · Daniel Rosehill
March 28, 202624m 53s
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Show Notes
Why do our faces betray us before our brains consent? This episode explores the strange science of involuntary expressions. Discover how a 2023 meta-analysis in Nature Human Behaviour proves that smiling literally reduces cortisol, and why Darwin’s old theories are finally getting a modern update. From the defensive mimicry hypothesis to the chemistry of tears, we uncover how the face acts as both input and output device. Learn why a genuine smile involves more than just your mouth, and how your body’s wiring predates conscious thought.