The aim is to force your opponent out of the ring or make any part of their body (except soles of feet) touch the playing surface.
The bouts are usually quite fast, lasting only a few seconds, although some matchups can go on for three or four minutes.
Pushing, tripping, slapping and other body throws are commonly used in sumo.
Wrestlers will typically start eye to eye in a bid to get an edge before the actual physical wrestle begins.
The sumo wrestlers cannot pull hair (headgear), strike at the eyes, or punch with a closed fist. There is no wrestling outside of the ring. Opponents should help each other up when they fall down. Don't lift by the head or breasts.
And lastly, you should visit the bathroom before the bout, as you will laugh!