Impossible. >> how much do you think ping-pong paid for this study? >> better than what for your mental health? like, that you round up all the crazy people in new york city and get them to play ping-pong in the subway? i don't think it will work. if you're stressed just take some time off and walk around the block. the mental health that i worry about are the people who are talking to themselves and looking at me and trying to make eye contact on the a-train. i don't think ping-pong will solve that problem. >> you might want the paddle, though, as a weapon. >> the paddle is -- it's too little...