JEET KUNE DO - The Principles II

III. Learn the 4 ranges of combat

Kicking - Punching - Trapping - Grappling

Jeet Kune Do students train in each of these ranges equally. According to Lee, this range of training serves to differentiate JKD from other martial arts. Lee stated that most but not all traditional martial systems specialize in training at one or two ranges. Bruce Lee's theories have been especially influential and substantiated in the field of Mixed Martial Arts, as the MMA Phases of Combat are essentially the same concept as the JKD combat ranges. As a historical note the ranges in JKD have evolved over time. Initially the ranges were categorized as short or (close), medium, and long range. These terms proved ambiguous and eventually evolved into their more descriptive forms although there may still be others who prefer the three categories.

IV. Five Ways Of Attack

A. Single Angular Attack (SAA) and its converse Single Direct Attack (SDA).

B. Hand Immobilization Attack (HIA) and its counterpart Foot Immobilization attack, which make use of “trapping” to limit the opponent to function with that appendage.

C. Progressive Indirect Attack (PIA). Attacking one part of the opponent's body followed by attacking another part as a means of creating an opening.

D. Attack By Combinations (ABC). This is using multiple rapid attacks as a means of using volume of attack to overcoming the opponent.

E. Attack By Drawing (ABD). This is creating an opening with positioning as a means of counter attacking.

III. Learn the 4 ranges of combat

V. Three Parts of JKD

Jeet Kune Do practitioners believe that techniques should contain the following properties:

Efficiency - An attack that reaches its mark
Directness - Doing what comes naturally in a learned way.
Simplicity - Thinking in an uncomplicated manner; without ornamentation.

VI. Centerline

The center line refers to an imaginary line running down the center of one's body. The theory is to exploit, control and dominate your opponent's centerline. All attacks, defenses and footwork are designed to preserve your own center line and open your opponent's. Lee imported this theory into Jeet Kune Do from Wing Chun. This notion is closely related to maintaining control of the center squares in the strategic game Chess.

The three guidelines for centerline are:

The one who controls the center line will control the fight.
Protect and maintain your own centerline while you control and exploit your opponent's.
Control the center line by occupying it.