I dunno. There is always this one, little overweight, sweaty guy without a shirt. Makes it a little bit sexual, doesn’t it?

There are also some medieval reenactment groups who do some real battles (with rules of course) and that is totally about fighting with each other. Something like a fight club but set in medieval context.

The Royal Armouries in Leeds, England has that. Well worth a visit if you're in the area.