Principles
The following are principles that Bruce Lee incorporated into his Jeet Kune Do.[3] He felt these were universal combat truths that were self evident, and would lead to combat success if followed. Familiarity with each of the "Four ranges of combat", in particular, is thought to be instrumental in becoming a "total" martial artist.
JKD teaches that the best defense is a strong offense, hence the principle of an "intercepting fist". For a person to attack another hand-to-hand, the attacker must approach the target. This provides an opportunity for the attacked person to "intercept" the attacking movement. The principle of interception may be applied to more than intercepting physical attacks. Non-verbal cues (subtle movements that an opponent may be unaware of) may be perceived or "intercepted", and thus be used to one's advantage.
The "Five ways of attack", categories which help JKD practitioners organize their fighting repertoire; comprise the offensive teachings of JKD. The concepts of "Stop hits & stop kicks", and "Simultaneous parrying & punching", borrowed from épée fencing's and Wing Chun's concepts of single fluid motions which attack while defending, comprise the defensive teachings of JKD. These concepts were modified for unarmed combat and implemented into the JKD framework by Lee, to complement the principle of interception.
'Be like water'
Lee believed that martial systems should be as flexible as possible. He often used water as an analogy for describing why flexibility is a desired trait in martial arts. Water is infinitely flexible. It can be seen through, and yet at other times it can obscure things from sight. It can split and go around things, rejoining on the other side, or it can crash through things. It can erode the hardest rocks by gently lapping away at them or it can flow past the tiniest pebble. Lee believed that a martial system should have these attributes. JKD students reject traditional systems of training, fighting styles and the Confucian pedagogy used in traditional kung fu schools because of this lack of flexibility. JKD is claimed to be a dynamic concept that is forever changing, thus being extremely flexible. "Absorb what is useful; Disregard that which is useless" is an often quoted Bruce Lee maxim. JKD students are encouraged to study every form of combat possible. This is believed to expand one's knowledge of other fighting systems; to both add to one's arsenal as well as to know how to defend against such tactics.
Economy of motion
Jeet Kune Do seeks to waste no time or movement, teaching that the simplest things work best. Economy of motion is the principle by which JKD practitioners achieve:
- Efficiency: An attack which reaches its target in the least amount of time, with maximum force.
- Directness: Doing what comes naturally in a learned way.
- Simplicity: Thinking in an uncomplicated manner; without ornamentation.
This is meant to help a practicioner conserve both energy and time; two crucial components in a physical confrontation. Maximized force seeks to end the battle quickly due to the amount of damage inflicted upon the opponent. Rapidity aims to reach the target before the opponent can react, which half-beat faster is timing, learned in Wing Chun and Western boxing.[4] Learned techniques are utilized in JKD to apply these principles to a variety of situations.
- Stop hits & stop kicks
"When the distance is wide, the attacking opponent requires some sort of preparation. Therefore, attack him on his preparation of attack." "To reach me, you must move to me. Your attack offers me an opportunity to intercept you."This means intercepting an opponent's attack with an attack of your own instead of a simple block. It is for this concept Jeet Kune Do is named. JKD practitioners believe that this is the most difficult defensive skill to develop. This strategy is a feature of some traditional Chinese martial arts, as well as an essential component of European épée fencing. Stop hits & kicks utilize the principle of economy of motion by combining attack and defense into one movement thus minimizing the "time" element.
- Simultaneous parrying & punching
When confronting an incoming attack, the attack is parried or deflected and a counter attack is delivered at the same time. Not as advanced as a stop hit but more effective than blocking and counter attacking in sequence. This is also practiced by some Chinese martial arts. Simultaneous parrying & punching utilizes the principle of economy of motion by combining attack and defense into two movements thus minimizing the "time" element and maximizing the "energy" element. Efficiency is gained by utilizing a parry rather than a block. By definition a "block" stops an attack whereas a parry merely re-directs an attack. Redirection has two advantages: It requires less energy to execute. It utilizes the opponents energy against them by creating an imbalance. Efficiency is also gained in that the opponent has less time to react to the nullification of their attack while having to worry about defending an incoming attack.
- Low kicks
JKD practitioners believe they should target their kicks to their opponent's shins, knees, thighs, and mid section. These targets are the closest to the foot, provide more stability and are more difficult to defend against. However, as with all other JKD principles nothing is "written in stone". If a target of opportunity presents itself, even a target above the waist, one could take advantage of the situation without feeling hampered by this principle. Maintaining low kicks utilizes the principle of economy of motion by reducing the distance a kick must travel thus minimizing the "time" element. Low kicks are also more difficult to detect and thus guard against.
The four 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.[5] These terms proved ambiguous and eventually evolved into their more descriptive forms although there may still be others who prefer the three categories.
Five ways of attack
- Simple Angular Attack (SAA)/Simple Direct Attack (SDA). Is a simple motion (Punch or Kick) which moves with no effort to conceal it, directly to the target on the most economical route. It can also be indirect, beginning on one line and ending on another. Such as a punch that starts to the stomach (mid line) and ends on the chin (high line). SAA is an attack that is launched from an unanticipated angle that is achieved by moving in such a way as to create an open line into which to strike.[6]
- Attack By Combinations (ABC). This is using multiple rapid attacks, with volume of attack as a means of overcoming the opponent.[7]
- Progressive Indirect Attack (PIA). Simulating an attack to one part of the opponent's body followed by attacking another part as a means of creating an opening.
- Hand Immobilization Attack (HIA) and its counterpart Foot Immobilization attack, which make use of trapping/parrying to limit the opponent's function with that appendage.
- Attack By Drawing (ABD). The goal when using attack by draw is to "draw" the opponent into a committed attack by baiting him into what looks like an exposed target, then intercepting his/her motion. One can execute a motion that invites a counter, then counter attack them as he takes the bait.[6]
Centerline
The centerline is an imaginary line drawn vertically along the center of a standing human body; and also refers to the space directly in front of that body. If we draw an isosceles triangle on the floor, for which our body forms the base, and our arms form the equal legs of the triangle, then h (height of the triangle) is that same centerline. The Wing Chun concept is to exploit, control and dominate an opponent's centerline. All attacks, defenses, and footwork are designed to guard your own centerline while entering your opponent's centerline space. Lee incorporated this theory into JKD from Wing Chun.
The three guidelines for centerline are:
- The one who controls the centerline will control the fight.
- Protect and maintain your own centerline while you control and exploit your opponent's.
- Control the centerline by occupying it.
This notion is closely related to maintaining control of the center squares in the strategic game chess. The concept is obviously present in Xiangqi (Chinese chess), where an "X" is drawn on the game board, in front of both players' general and advisors.
Combat realism
One of the premises that Bruce Lee incorporated in Jeet Kune Do was "combat realism". He insisted that martial arts techniques should be incorporated based upon their effectiveness in real combat situations. This would differentiate JKD from other systems where there was an emphasis on "flowery technique" as Lee would put it. Lee claimed that flashy "flowery techniques" would arguably "look good" but were often not practical or prove ineffective in street survival and self-defense situations. This premise would also differentiate JKD from other "sport" oriented martial arts systems that where geared towards "tournament" or "point systems". Lee felt that these systems were "artificial" and fooled its practitioners into a false sense of true martial skill. Lee felt that because these systems favored a "sports" approach they incorporated too many rule sets that would ultimately handicap a practitioner in self defense situations. He also felt that this approach to martial arts became a "game of tag" which would lead to bad habits such as pulling punches and other attacks; this would again lead to disastrous consequences in real world situations. Because of this perspective Lee utilized safety gear from various other contact sports to allow him to spar with opponents "full out". This approach to training allowed practitioners to come as close as possible to real combat situations with a high degree of safety. Donn Draeger, world renowned martial arts pioneer, was the first Westerner to bring widespread attention to the often cited “-do” versus “-jutsu” controversy. Historically the "do" or way arts were based on the "jutsu" or technique arts without what was deemed "dangerous techniques". The "do" arts such as Judo were thus seen as a "watered down" version of their "jutsu" counterparts such as Ju-Jutsu, a combat-tested martial art, and thus considered a sport. Lee objected to these "sport" versions of martial arts and instead emphasized combat realism.
Absorbing what is useful
This is the idea that a martial artist can only learn techniques in their proper context, through a holistic approach. Styles provide more than just techniques: They also offer training methods, theories, and mental attitudes. Learning these factors allows a student to experience a system in what Lee called its "totality". Only through learning a system completely will an artist be able to, "absorb what is useful," and discard the remainder. Real combat training situations allow the student to learn what works, and what doesn't. The critical point of this principle is that the choice of what to keep is based on personal experimentation with various opponents over time. It is not based on how a technique may look or feel, or how precisely the artist can mimic tradition. In the final analysis, if the technique is not beneficial in combat, it is discarded. Lee believed that only the individual could come to understand what worked; based on critical self analysis, and by, "honestly expressing oneself, without lying to oneself."
