In the clip the sôke Masaaki Hatsumi shows the Dragon Body exercises (龍体運動)
The masters of any spiritual or artistic current repeat the forms of their practice habitually, not to establish difference between the regular practice and the daily life. They understand that the art and the artist have to establish a relation of unit that leads to the multiplicity in the interior and the exterior of his life.
The practice of an art is like a Japanese bamboo plant during the first seven years. Is very exogenous to the growth of the Japanese bamboo during his first seven years of existence, scarcely it is possible to estimate his growth, perhaps an ignorant farmer, would not have the patience and give up, however, to reach the seventh year, in just six weeks the Japanese bamboo plant grows over thirty meters.
What happened? Why no growth during the first seven years? It’s not that it did not grow, but during the first seven years of apparent inactivity, the bamboo was generating a complex root system that would allow it to hold when growth began.
Come to this point is important to meditate about this concept used by the masters “Take no uchi” (竹の内), this translates as “the interior of the bamboo.”
How to copy the technique of the master? How to copy something that has been created to keep secret and hidden to the look of the five senses (“mienai” – “見え ない” – invisible) and to the comprehension of the intellect (“wakaranai” – “分から ない” – incomprehensible)?
THE INTERIOR (INWARD) OF THE BAMBOO IS EMPTY.
“The way should not be hidden. To make known is the best means of keeping it hidden” – Yagyū Munenori.