Centering
Centering is the development of the root. It
is the lowering of the center of gravity within the body. It is
accomplished by breathing and correct body structure. Like a
triangle, one must develop a base in relationship with the other
parts.

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Sinking Power
Centering is a sinking power. If the stance is too wide, too narrow, too long or too short, the center will be unstable. Imagine an upside down triangle standing on it's tip and you can see the slightest force will cause it to topple. This is a floating center and should be avoided.
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Forward Momentum
The centered rooted posture must be expressed in a slight forward momentum to create a forward driving force in attack. This forward momentum mimics the axis of the earth which is not upright but inclined on an approx. 15 degree inclination.
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