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Can wiggling your pinky really stop cognitive decline?

What if protecting your brain from dementia was as simple as wiggling your little fingers a few seconds each day? That’s the promise behind “pinky time”, a viral TikTok trend that claims a simple finger exercise can lower your risk of developing Alzheimer’s. Videos promoting this supposed brain-health hack have attracted millions of views, with some suggesting that difficulty performing the movement could be a warning sign of cognitive decline. By arranging the fingers into a specific pattern and moving the pinkies up and down, proponents argue you are giving your brain a quick workout that keeps it sharp.