Sumo (相撲sumō) is a wrestling sport where a wrestler (rikishi) attempts to force another wrestler out of a circular ring (dohyo) or to touch the ground with anything other than the soles of the feet. The sport has a history spanning many centuries. Many ancient traditions have been preserved in sumo, and even today the sport includes many ritual elements. Most sumo wrestlers are required to live in communal “sumo training stables” known in Japanese as heya where all aspects of their daily lives – from meals to their manner of dress – are dictated by strict tradition. From the book “We are all equal”, by Finn Nygaard. Author Elsebeth Aasted Schanz, PhD, Manager and curator of the Danish Poster Museum.