They do all kind of exercises before entering the dojo
But this is the one that always impress me (Since I cannot do it myself)
This is just before entering
As for me I needed some strength, so I eat some typical Japanese thing :-)
Global view of the stadium, still not full but will be very quickly
Gagamaru preparing himself for the fight
Tochiozan as well
He is stating the name of the sumos that will fight
Amuru in preparation
And finally Tochinoshin my favorite
And here a video showing a bit of the atmosphere at the stadium!