Cupping therapy has been used throughout Asia for thousands of years, but modern science hasn’t been able to confirm its benefits. Michael Phelps and other Olympians have red circles on their ba ...

Michael Phelps was among the first big swimmers ... the athletes to have the marks across his shoulders. The marks come from cupping, an old therapy that has its roots in Asian and Middle Eastern ...

but the ancient Chinese practice only made it into the American mainstream a few years ago, thanks to Olympic gold medalist Michael Phelps ... showed off her own cupping marks on Instagram ...