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You might think you’re special because you can flex your nostrils or flap your ears–but it turns out that there is a person out there who can voluntarily move their pupillary sphincters. What the heck are those? Listen to this one, it’s worth it.
Want to know more? Check out the scientific paper!
Amy’s Links:
https://www.livescience.com/man-can-control-pupil-dilation.html
https://www.sciencedirect.com/science/article/pii/S0167876021008448?via%3Dihub