Fight Klub - Another secret gem of the Indy

I've written a couple of articles recently about the different little known extras you get on a Royal Caribbean cruise. I think the last one I wrote about was topless sun bathing, (which, if you want, you can read by clicking here). Following on with the same theme I'll be posting today about the Fight Klub onboard the Independence of the Seas.
Did you know she had a usable boxing ring in the gym?