Last night I dreamed of a train that never stopped

I'm on a train that never pulls into a station, and every seat is a sparring partner I've lost track of. They're all still taping their hands, nodding at me, saying 'I'm fine' like it's the punchline to a joke only they get. The train rattles past the gym where I lost on points, and I'm not even mad about it anymore — I just want to know where we're all headed.