eople do push-ups during their chess boxing training session in Berlin September 18, 2009. Welcome to the bizarre world of chess boxing, developed in inner-city Berlin and featuring alternate rounds of chess and boxing in a fierce combination of brains and brawn. Boxers play six rounds of chess alternating with five of boxing as they put their physical and mental skills to the test. Chess rounds last a total of four minutes, with the players wearing headphones to block out cheers, coaches' advice and the commentator's voice.
Text and Images: Reuters