SHOTOKAN BUNKAI VIDEOS

In the past, it was expected that about three years were required to learn a single kata, and usually even an expert of considerable skill would only know three, or at most five, kata. Gichin Funakoshi 

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Bunkai, literally meaning "analysis"or "disassembly", is a term used in Japanese martial arts referring to the application of fighting techniques extracted from the moves of a "form" (kata). Bunkai is usually performed with a partner or a group of partners which execute predefined attacks, and the student performing the kata responds with defenses, counterattacks, or other actions, based on a part of the kata. This allows the student in the middle to understand what the movements in kata are meant to accomplish. It may also illustrate how to improve technique by adjusting distances, time moves properly, and adapt a technique depending on the size of an opponent.

Some kata have another layer of application that is taught using an Oyo Bunkai, an "application of the kata in ways other than the standard bunkai." Different practitioners will learn or discover alternative applications, but the bunkai, like the kata, varies based on the style and the teacher. A single kata posture or movement may be broken into anywhere from a few to a few dozen applications, and the same sequence of kata moves may sometimes be interpreted in different ways resulting in several bunkai. Students are encouraged to consider each movement and technique in a kata in response to multiple possible attacks, for example: use of a particular movement against a kick, against a punch, against various forms of grappling. Through analysis of the move and practice in variant scenarios, the student will unlock new techniques and expand their understanding of known ones. Some martial arts require students to perform bunkai for promotion.

 Bunkai can be obvious or elusive depending on the technique in question, the moves preceding and following it, and the individual practitioner. There are usually many stages of depth of comprehension of bunkai only reached through the passage of time.