The recoil of the first movement of Pinan Yondan, initiates the second movement, and so forth.
Through the use of recoil with koshi dynamics, a portion of the energy of each movement is recovered, and recycled, so to speak, into the next movement.
That is one reason a person skilled a koshi dynamics does not get as tired during kata -- he or she is expending less total effort. The idea is to get more done with less. And real skill is getting a whole lot more done with a whole lot less.
It is like bouncing a ball. It does not take much energy to keep it bouncing... if you time it right.
Respectfully,
Charles C. Goodin
