Oldie but goodie here... It is a rare opportunity to glimpse the training of a Sumo wrestler. This is a short clip of two of the best ever to fight the game, Harumafuji and Asashoryu (my personal favorite) prior to his premature retirement. A few things to notice in this clip:
How small the dojo is!
How absolutely ripped and strong these cats are!
How intensely they train
Basic. Nothing fancy or contrived here. Just simple hardwork, technique, and discipline!