Wake up and smell the armpit sweat!
I was at the boxing club last night talking to a guy who is an experienced boxer and wrestler. He gave me a tip that I've never heard anywhere before:
If you get your bell rung during a boxing match don't worry! Just clinch with your opponent and shove your head into his armpit. Take a good whiff of his sweaty armpit... because there's ammonia in his sweat... just like in smelling salts...
It will wake you up and clear your head... allegedly.
I don't know if it works or not but I thought it was amusing. :)