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The anatomy of a smile: how to spot a fake from the real thing

Summary by The Conversation
Axel Bueckert / Alamy Stock PhotoYou’ve probably heard the claim that it takes more muscles to frown than to smile. It’s usually framed as a feel-good reason to turn your frown upside down – less effort, more joy. But anatomically, the numbers don’t quite add up. We’ve all seen it – the smile that doesn’t quite reach the eyes. From awkward family photos to strained workplace pleasantries, our brains often detect that something is off long before…

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The Conversation broke the news in on Thursday, May 29, 2025.
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