Street fighting is NOT a sport...(NO MONEY) I would UFC up there with the "poker Championship's" on ESPN....
Pro poker players and UFC champions both make more than all but as few BBs.
Pro UFC dudes get sponsors and MMA events earn big cash from PPV and draw huge crowds.
The fighters train a shitload harder for what they have to do than BBs, and the risks are real.
....and training with the mouthpiece in is only to get used to working at high effort and learning to breathe trhrough the nose mainly.
you are one very jealous and stupid dude. You should put in some research before you spout off random shit.