I'm neither 'yay'-ing or 'nay'-ing the following; just sharing something that may (or not) lead to some interesting discussion (as to the use of tools in the implementation of the below quoted stuff). If someone has other clips they could cite, that would be appreciated, too
Suburi (swinging of the sword) is practiced slowly with the heavy tanrenbo (practice pole) and with slow breathing in a sequence of movements and stances. This develops strong and flexible hips and legs and also cultivates the coordination of movement, breath and sword essential for effective sword technique. Misogi refers to the breathing and meditation techniques used to cleanse the inner energy system in order that the abdominal centre (tanden) awakens.