Uncrowned is a new destination for all things MMA, boxing, wrestling, and more, featuring Ariel Helwani. ANTWERP, Belgium — The Germans aren’t trying to make a fashion statement with their unitards.

As art genres go, performance art is perhaps to most easily mocked. You know the stereotype: a guy in an embarrassingly snug unitard takes the stage and does the whole “cocoon-to-butterfly dance” ...