Yes, that is a thing. For my wife’s sister’s birthday, her daughter in law organized a group class here.
It looks something like this. Silks are hung and you can stretch, hang, flip, do all kinds of funky things. Needless to say, my girls loved it. Victoria learned to hang herself upside down.
Danielle learned all kinds of moves.
I did it too, but there is thankfully no photographic evidence…