Most of them live in Japan. Sumo wrestlers live in a 'stable' where they train and live. They will spend most of their day in the stable eating, training and sleeping.
Pretty much all of them live in Japan. Sumo wrestling has not taken off to any great degree in any other country. The only place to make a good living as a sumo is in Japan.
Canada
Anyone can become a sumo wrestler. The first step is to be accepted into a sumo stable, a sort of club or commune where you live and train. You can enter a stable at a young age, as young as 13.
It provides a place to eat, sleep and train. Food is plentiful to help them gain weight. They train with the others in their stable so there are always training partners. The stable provides them with all the necessities they need.
They normally live in their stable until they retire. If they are successful sumo, they may be able to become a coach or owner of a stable. Otherwise they find another way to make a living.
In Japanese, there is no visible indication, it is determined by the context. He was a sumo wrestler. There were ten sumo in that stable.
What English-speakers think of when they say "sumo" (i.e. heavyset men wrestling) is also called "sumo" in Japanese. Basically, sumo is sumo!
Sumo is a Japanese sport. There are Chinese sumo wrestlers.
Sumo
Yes Sumo are useful.
The champion sumo (Yokozuna) is inside the sumo match place.
its in sumo dojo