A matter of opinion

These mats are used for training in MMA (mixed martial arts), otherwise known as cage fighting.  A group of fellows train at the hall on monday nights and two other days every week.  

What with the wrestling that's recently come to town, it looks like Blackheath is becoming the town of biff.

Actually, he was very nice when I stopped to ask what they were doing.  Even invited me to join them.

I don't know.  I think I'll give it a miss.