Christmas can be a tricky business.
Sebastian Klussmann, 31, from Berlin is European quiz champion, chairman of the German Quiz Association and a feared hunter for "Asked - hunted" (ARD).
WORLD:
Do you do any warm-up exercises before a quiz?
Sebastian Klussmann:
Not really.
I am like a high jumper who mentally runs and sees him jumping over the bar.
I see how I answer questions correctly and thus create a certain basic trust in myself.
WORLD:
Then things can really start now: