Olympic swimming superstar Michael Phelps scored his record 19th Gold Medal on Monday night....he goes for the Gold again Tuesday night. But that's not the only thing people are talking about...
It's the bruise marks on his back - they're actually the result of an ancient Chinese healing practice called "cupping."
Here's a photo from Phelps' Instagram account. It shows him receiving a cupping treatment.
What is it?? Dr. Stephen Jochen was here to show us - or rather, show Steve Edwards the ancient healing benefits of cupping.
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