The Evolution of Jeet Kune Do

 Many times I've read, or have been part in discussions with other martial artists who believe that the message of Bruce Lee is to evolve as a martial artist.  I agree. 

What they often say is that Jeet Kune Do should evolve.  I do not agree!   

I feel that often the two topics are mixed up. This is understandable as both Jeet Kune Do and the idea of personal development/evolution come from the same source, Bruce Lee!   So what are my views?  

Jeet Kune Do is the martial art that Bruce Lee developed, it was his personal 'end result, or end product' of his years of studies on the martial arts.  It is well known that he said that he was developing a system chiefly made up of Ving Tsun, Fencing and boxing,  but  soon realised that things needed adapting to fit together. This resulted in studies on how the human body moves, and how this fits in a martial arts structure. He used those latter studies to eventually arrive at what his Jeet Kune Do looked like/contained in the year(s) leading up to his untimely death.  Yes the dominant influences are Ving Tsun, Fencing and Boxing, they do form the foundation, but by integrating the knowledge of human body mechanics,  the elements of these arts were modified where required to fit that exact structure, but  that's a topic for a future post. It is true that he studied other arts too, but not as some people say , to integrate them into Jeet Kune Do, but rather to study them to develop ways to defeat such martial artists. 

Towards the end of his life, Jeet Kune Do was already far developed, it contained elements of all forms of unarmed combat, including striking (punching and kicking), trapping, and to a lesser degree also some groundwork (throws etc)   Again not specifically various arts, but the principles of efficient human movement to execute those tasks. If you have trained in the art for a few years, and you have understood Bruce Lee's notes/comments etc. you will start to realise that actually Jeet Kune Do isn't really missing much, if anything. (also study the Tao of Jeet Kune Do 'facts of Jeet Kune Do' on page 23. ) 

It is a well rounded system that has everything you'll need for self defence. People that say it is 'missing' something are probably focussed on just a part of the art. This is perhaps because that idea is enforced due to the fact that most JKD practitioners appear to train on the stand up elements of fighting, seemingly neglecting the 'ground work/wrestling' parts. (it's often the stand up element you see in promotions etc.). 

It must be said however that Bruce Lee's view on the groundwork was that there were easier / simpler ways to inflict pain on an opponent, so he primarily studied these principles from a point of defending against it. Despite his fighting abilities, he was also aware that he was a smaller individual and if he ended up wrestling with someone bigger and heavier than him, he'd potentially be at a disadvantage. Lastly, and a very important issue is that Bruce Lee stressed 'less is more' (hack away the unessentials). Not only from the point of limiting your arsenal and get really proficient in a couple of things, but also stripping away all unnecessary additional movement, no 'get set, ready' preparations etc, no telegraphing of intentions, honing the fine motor skills, and drill to ensure the techniques become ingrained such that in a moment of high stress/fear, they are there like a reflex! (I do not hit, it hits all by itself) 

I am all in favour of people training / furthering their knowledge on certain aspects of (unarmed) fighting/combat.  Perhaps it fits your fighting style, perhaps its because the person intends to compete in tournaments where that aspect is prevalent, so you start to 'specialise'.  

So what's the problem?  My issue is with the identity of Jeet Kune Do, Bruce Lee's body of work. I want to preserve that body of work for future generations.  

If people proceed to 'do their own thing', then there is a real risk that at some point personal preferences will dominate and perhaps deviate from some of the basic principles that Bruce Lee incorporated in his JKD and that formulates its identity. A simple example is the strong side forward. If that is no longer the case in someone's preference, then that is deviating from Bruce Lee's JKD and will over time (students of that person and beyond) lose any semblance with what the orginal art once was.  Now I know that I mentioned the study of 'fixed' patterns in my blog on the 'Ung Moon' form in May 2026.  This 'learning fixed patterns' is a different topic than not 'expanding/evolving' the JKD curriculum.  JKD definitely is an art that allows freedom, as in we don't solve problems in fixed sequences, fights are dynamic/spontaenous in nature, and so should be our training, but JKD has core strategies and structure.  

I'm not saying that what ever the result is, is inferior. It may in fact be very well suited to the individual. So if that is what your goal is as a martial artist, to find what works for you by studying all sorts of styles etc and to take what works for you and develop your own style/system, then great. You are doing what Bruce Lee at times spoke of.  You are not neccesarily arriving at the same point that Bruce Lee did, and what he called his Jeet Kune Do. 

So in closing:

- Jeet Kune Do is Bruce Lee's personal 'art', that deserves to be preserved 'as is' and you will find that it is a great art in it's own right that will serve you well. Changing/adding things will muddy the water and JKD will eventually cease to exist, which would be a crying shame. 

- If you are looking for 'more', or want to follow your own path, then that 'exploring' is what Bruce Lee did himself, but will not neccessarely lead to the same end product, and therefore should not be called Jeet Kune Do, even if you studied JKD first and then start to move away from it for whatever reason. 

Feel free to disagree, we are all individual, and as a JKD practitioner I hope you are a critical thinker, not just a blind 'follower' of the 'truth', but if  you do have a different view, I'd be interested in hearing from you. Comment below. 

Walk On! 

The sources of the TAO

A few years ago, author James Bishop released a book called ' who wrote the TAO', where he delved into the origins of many of the quotes, paragraphs originated that are found in the Tao (which as we now know was largely compiled by Bruce Lee's own notes, who had 'copied/taken' these texts for his own personal research, never intending to publish these had he lived).  

That book was released a few years ago. James Bishop was aware of earlier research attempts however and he managed to find the family of the original researcher and now that body of work has been released with his help. The proceeds will go to the family of Joe Snyder's family.




When the Tao of Jeet Kune Do was published in 1975, it quickly became one of the most influential martial arts books ever written. Celebrated as Bruce Lee's definitive statement on combat, philosophy, and personal expression, it inspired generations of martial artists around the world. But there was another story waiting to be told.


Years before digital databases and Internet search engines existed, researcher Joseph J. Snyder embarked on a painstaking investigation into the origins of Bruce Lee's posthumous masterpiece. Traveling from library to library, comparing thousands of pages by hand, Snyder uncovered the literary, technical, and philosophical foundations upon which the Tao of Jeet Kune Do was built. His work revealed an extraordinary network of sources drawn from boxing, fencing, Judo, Aikido, kinesiology, exercise physiology, and philosophy, his research anticipating modern Bruce Lee scholarship by decades.

Completed in the early 1980s but never published during Snyder's lifetime, The Sources and Application of Bruce Lee's Techniques is both a fascinating work of literary detection and a compelling study of how Bruce Lee developed Jeet Kune Do. Snyder demonstrates that Bruce Lee's greatest genius lay not in creating techniques from nothing, but in his remarkable ability to study, synthesize, refine, and transform knowledge from many disciplines into a revolutionary martial arts philosophy. What results is a fascinating work of scholarship that is both an exposé and a training guide.

Published now for the first time, this long-lost manuscript includes Snyder's complete research, extensive documentary appendices, source comparisons, and traced illustrations, preserving the work of a forgotten pioneer whose scholarship deserves a permanent place in Bruce Lee studies. Get your copy at Amazon!


Walk On!

An interview with me

Recently I was interviewed by Empower Martial arts Podcast.

You can find it here:  The Real Jeet Kune Do ?

Walk On!

Hand before Foot! Correct execution of the lead straight in Jeet Kune Do.

 On one of the several Facebook Jeet Kune Do group, there is currently a 'discussion' on hand before foot when punching. I put discussion in brackets as the poster of the questions appears to be fully convinced that moving hand and foot together (or even a foot a fraction earlier) is better (more powerful) including various example videos.  (the group in question is JKD talk, look it up if you so desire) and it is starting to take on levels of 'trolling'.  

So let me explain why hand before foot.  The human eye has poor depth perception, and to register depth, it required multiple points of reference. Moving a fist towards someone's face in a perfectly straight line results in the person not seeing the movement until it's well underway, and differences in the position of the fist vs the rest of the arm or the torso of the opponent become more obvious.  All this takes place in a split second of course but that is exactly the reason, to beat the opponent to it. To hit before they can respond or before their response/defence is fully developed. 

If you step forward at the same time, the entire body has so many reference points for us observers, that you will notice almost immediately.  

The straight lead, is very much based on the above principles, and they come from fencing. A fencer will trust his epee forward to the opponent before he himselves moves, a very deceptive way of striking. 

You'll hopefully understand that this principle is very effective when you have to bridge a gap between you and the opponent in order to land the hit. 

A common mistake however is that people end up landing the fist with a completely outstretched arm, almost like superman. This is a case of the wrong timing/distance judgement. Whilst the fist is the first to land, you have to ensure that there is at least about an inch or two left of the arm 'extension' to complete, as well as some of the hip rotation, before the leadfoot lands.  

This will ensure that the forces involved with the arm extension and the rotation of the hip all contribute to the power of the strike. If these are already completed on the moment of impact, all you are left with is the linear force produced by your footwork x your body mass.  (force=mass*acceleration(speed)).

These factors are often poorly understood. You need to combine the forces of your footwork, with that of the arm and hips to maximise the impact.  This takes time and lots of repetition to get right, and for that purpose it is important to try to train this slowly.  

How to do it:

From your guard position with your hand in a neutral (almost horizontally) position (this way it starts from underneath the peripheral vision of your opponent, giving him even less reaction time). 

Start extending your arm (nothing else!), once this is extended almost halfway, you start to add hiprotation, and a fraction later you push off the rear foot.  This second half of the movement is difficult to do slow as you can't overcome gravity, you'll just have to complete the movement at normal speed.

However it is important to train the start of the punch slowly, to really develop the neural pathways/signals to execute the punch correctly. And do this repeatedly. Once you can do that without thinking, you slowly start to speed up the first half of the movement. There is no other way, step by step, slowly increasing.  The moment you sense you're ending up doing it at the same time, slow down and start again.  You don't need (and I recommend you don't!) to spend hours on it.  Spend 5 minutes on it, maybe a few times per day where you have a moment available.  Do this consistently and regularly, several times per week. That teaches your nervous system much more effective than one longer session (if you do spend longer, spend that time on other aspects of JKD training, but start with the fine motorskills such as the above when you are fresh and fully focussed, doing it at the end of a session will result in less focus, you're physically and mentally tired so you risk doing it wrong)

If you have a target (bag, or someone holding a glove for you), then start using this to practice on and take care of the moment of contact, the arm should still be in it's final phase of extending, the hips in the final phase or rotation, and the leadfoot not yet landed to ensure all forces are present in the impact!.

Don't have the arm too far bend on contact because then the remaining extension happens when your leadfoot is already on the floor, and the punch becomes a push! A way to get the fist landing correctly is to try and aim for the palm of the hand that is holding a focusglove, not the surface of the focus glove itself. That will result in a penetration of approx 1-2" in the final extension.(so aim through the glove (just)).  

These are all small but very important details, don't skip them, focus, and get it right!   

Walk On! 

It's supplementary..

 Of course it comes as no surprise that a good varied healthy diet is important to keep our bodies in good shape. If you then also engage in (high intensity) physical exersize, such as martial arts, supplements are a good idea. 

If you get a bit older, you might need to give your body a bit of extra support, just in case you don't get the correct and/or sufficient amounts of certain food groups and/or vitamins by way of your daily diet. Changes in our bodies, metabolism etc as you age mean you may need this, especially if you also work out. Vitamin tablets (there are many different ones out there) are a good start, vitamin C is probably the most well known and an important one.  This blog however I wanted to focus on  protein powders. These have been around for many years and are generally good to take. However recently there are more variations available that mix in other elements that can be beneficial.  

The main two are either adding Creatine or Collagen, or both. (illustrative picture attached, other brands/flavours are available).

Below a quick breakdown of what each of those target. 

Creatine:
How it works: Creatine helps your muscles rapidly regenerate ATP (adenosine triphosphate) during explosive or heavy movements.
Benefits: It is heavily researched and proven to increase power, delay fatigue, and even support brain function and focus.
Who it's for: Athletes, weightlifters, and anyone experiencing age-related muscle or cognitive decline.
Actionable tip: Look for Creatine Monohydrate (the most cost-effective and well-studied form).

Collagen:
How it works: Collagen is the most abundant protein in your body. Taking hydrolyzed collagen peptides signals your body to increase its own natural collagen synthesis.
Benefits: It supports the scaffolding of your body, reducing visible signs of aging by hydrating the skin, and promotes resilient joint cartilage and tendons.
Who it's for: Anyone focusing on beauty, anti-aging, or joint and connective tissue support.
Actionable tip: Pair it with foods or supplements rich in Vitamin C (e.g., citrus or a vitamin complex), as Vitamin C is required for your body to properly synthesize collagen.

I take my protein powder as part of my 'overnight oats' breakfast. I use greek Yogurt, rolled oats, blueberries, a scoop of protein powder, some honey and some semi skimmed milk (to make it a bit easier to help with the mixing and doesn't turn into concrete :-) ). 

I hope this helps!

Walk On!

Ung Moon or not?

 In Jeet Kune Do, we don't tend to practice 'forms'.  Forms for the uninitiated, are patterns-sequences of movements that train kicks, punches, stances etc and in some cases also are symbolic for a particular aspect of history of an art, or it's country of origin, amongst others. 

Nobody fights like that however. Traditional martial arts such as Karate and/or Taekwon-do, to name a few, often have a 'traditional' aspect in which forms (Kata in karate, Tul or Poomse in Taekwon-do) are being practiced and they count very heavily towards your next belt. They also have a sports/competition aspect, where practitioners spar eachother, and that looks very different. (they also compete in patterns but that's beyond the scope of this blog). 

Other martial arts do not practice forms (examples are Muai Thai, Boxing, fencing, BJJ etc.), but are concerned with the honing of skills such as punching/kicking etc etc and practice these on stationary targets, moving targets, and spar much more frequently to test their skills and develop timing/strategy. 

Bruce Lee was very aware of that and once his Jeet Kune Do journey had begun proper, he took the same approach, he mostly didn't practice forms (anymore) but instead all his training became focussed on sharpening the tools and develop rhythm, timing, strategy and become the best fighter he could be. 

However, Jeet Kune Do developed out of Bruce Lee's earlier ideas on the martial arts he termed Jun Fan Gung Fu, in other words 'Bruce Lee's Gung Fu' (Jun Fan Lee was Bruce Lee's cantonese birth name), and a significant element of that was still rooted in his formal training in Ving Tsun (Wing Chun) Gung Fu.  During his Jun Fan Gung Fu 'years', he also developed a pattern for his students to practice, with the same aim as traditional arts would, to develop techniques etc but in a formalised method. It was called Ung Moon, which many translate as 'the 5 gates'. 

It comes as no surprise that if you observe someone demonstrating this 'form', you would be forgiven to think you're watching someone practicing Ving Tsun, particularly if you see how they open (start) the form.  Various aspects, that would later return in Jeet Kune Do (in modified form) can be found in this form, for example the first section is about simultaneous attack and defence, executed by a series of blocks and strikes at the same time, both left and right, but it is performed from a more 'squared on' stance.  As you may know, the idea of simultaneous attack and defence is a principle very much present in Jeet Kune Do. 

There are JKD practitioners and schools that insist on training in this form, particularly in more recent years. It is almost as if there is a desire to 'formalise' JKD training in order to 'identify' it, perhaps make it more 'interesting' , and it's also depending on lineage. 

Those in a lineage more alligned with earlier 'Jun Fan Gung Fu' , and even Dan Inosanto's concept approach, are more inclined to study/practice this form than later lineages such as that of Ted Wong, where I belong too.  That latter approach is more alligned with Bruce Lee's later thinking to leave the form practice and concentrate on the more 'practical' / hands on approach of drilling and testing over and over... 

So what do I think? I'm not a person to insist that someone should practice JKD in this way or that way, but rather look at themselves and ask what do I want to acchieve?  If you want to learn JKD as per the latest ideas of Bruce Lee, then perhaps you should spend your valuable time on just drilling, working the bag, focus gloves and practice sparring.  If you are interested in where things originated, perhaps out of a general interest in the martial arts, then by all means learn the Ung Moon too. 

If you have the interest, the time and it alligns with your current goals in Martial Arts, then by all means go ahead, and enjoy!  There are some examples out there that show the Ung Moon from a more practical approach, be it in a very Ving Tsun like (squared on) approach, and have turned it into a partner drill by doing so. That may be more useful as to be fair, a more squared on 'positioning' happens in JKD almost naturally in close range (not striking or grappling/trapping range!! get rid of the idea to define distances by 'tools or techniques, but describe them by distance, for that's what it is, nothing more) but there are nuances here that go beyond the scope of this blog. Come to training to find out what that is.

My personal view is that from a practical (and time constraint) perspective, just practice the techniques that form this pattern(form), as individual / isolated partner drills and from a more alive basis (you're moving) like a semi free 'sparring' drill. 

I would short sell you not to leave you a link to someone who is performing the Ung Moon, and someone who explains some  practical applications of it.  Finally here's also a video of Jeet Kune Do veteran Chris Kent, a highly regarded and very knowledgeable instructor, with his views on the Ung Moon. 

You will note that they will use a lot of chinese terminology, where in later years Bruce would just call techniques by their english names, as we tend to do in our classes. (and I'm the first to admit I'm not familiar with some of this 'traditional' terminology, it's not required to learn Jeet Kune do as we practice it).    Again, terminology and chinese name knowledge is often used in a more 'formal' setting, and will help if you want to study the older variants of Bruce Lee's martial arts journey.  We call a punch a punch... your mileage may vary. 

Walk On! 

Promo : Jeet Kune Do Lessons in Devon, UK.

 Ok, apologies in advance but just a quick plug in case any of you readers stumble accross this blog and are interested in training with me. 

If you live in Devon, specifically in or near Torbay, Teignmouth, Newton Abbot, Ashburton and even Plymouth and/or Exeter,  and you want to learn Jeet Kune Do, get in touch. 

I offer monthly memberships, as well as ad hoc classes for those on shift work that can't make it to every class and therefore don't want to spend monthly fees that they can't attend.  I also do (limited) private classes for the right person(s). I value my spare time however so spaces are very limited! 

Get in touch via the website contact page at JEET KUNE DO and hopefully I'll see you soon!

Walk On!