Hmmm.... Well there is nothing unique about Marbo really, or it is only unique in as much as jeet kune do is unique or white crane kung fu or any martial arts system for that matter. The physical side of the training (when done properly) I have to say is really pretty good - but it's no magic. Any martial artist who has done wing chun for example will be familiar with the centreline principle, and indeed a lot of the kicks and punches when practised are done so from a front on position like wing chun (bent knees, centre balanced, but without the toes pointing inwards) - this is then carried on to essentially a tight centreline based right and left stance (and rear for the back kicks). Of the actual techniques, to get the 'Green' grade there are something like (and I may be one or two out here as it was some time ago) 7 punches, 12 kicks, 8 takedowns, 1 throw, defensive positioning on the floor and 2 takedowns from the floor, lunging and retreating and 5 or 6 punch parrying exercises - I think when it is totalled up it is something like 125 different techniques when tested for the grade. After that there is a 'testing' thing where you spar against 2 (or more depending on the feedback) people consecutively who already have their green grade and they judge whether or not you have been able to maintain good form under pressure, and indeed when you return that pressure, that you do it without anger in a controlled manner. That's it really:- get over 90% on the fixed techniques and be voted 'safe' by all the people watching you spar and you get your green grade. Green to the beginning of the black grades is essentially building on those initial skills and focusses (in a very general way without having to go through all of it in detail) in developing coordination, inbuilt reflexes through repetition, leg flexibilty, covering distance on attack, attacking while retreating, multiple opponents, utilising open hand as opposed to closed hand techniques, understanding in better details the physiology of the human body and how it relates to weak points, and quite a bit more. Took me about 4 years of 1-2 sessions a week to get to the top of the Green levels (of which there were 3 when I did it) - the first of the black grades is to demonstrate each technique from Red to Green 3 to perfection (in the eye of the instructor anyway) - usually takes a year or so to do that, the next black grade focusses more on the mental aspects of the art - concepts of speed versus power for example and encourages you to explore these concepts while sparring to better understand how they affect the way you can deal with an attack. After that? No idea - couldn't stand it any longer and I left. One thing that you need to understand is that as a physical martial art, it is really very good. There is loads to learn, there is loads to get back from it and purely and simply because of the volume of sparring that you do (from light and slow to heavy and fast) after 3 or 4 years of it you do get a really good understanding of strike distances, how to quickly engage and disengage and a huge understanding of human physiology - what it can do, what it can't and how to hurt it. On top of that there were day training courses and survival courses (which were amazing - grim and nasty, hungry, tired and sore, but amazing), staff and knife training and lots of other fun stuff. When we trained, we trained hard and it was with a great bunch of guys - most of us worked on a door now and again, so got a fair amount of 'practical' application (although dealing with someone in your face after they've have about ten pints is more about good humour than martial arts!) When I left I did make a point of going to lots of different clubs and sparring with the dan grades there (or equivalent black grades) as even then Marbo was a bit on the insular side - although I have to say that being banned from training because you went somewhere else to do some different training was UNHEARD of. Obviously, everywhere I went, no-one had heard of Marbo at all - it was quite odd actually as I was an unknown quantity to them, and to myself - I had no idea what to expect. I am pleased to say that everything I had learned up to that point stood up to the challenge - I got quite a few surprises, but by and large the marbo training was efficient in defense, and effective in attack. So there you go - bit of a ramble for which I apologise - its not magic, it is a bona fide martial art - recognised as such not necessarily by me (although I would and am a champion of it as such), but by the people I sparred against and trained with in those other clubs. My caveat on this of course is that this is 15 or 20 years ago. I doubt very much that the techniques have changed, but I can certainly not vouch for the current quality or intensity of the training. You'll probably note that I have not mentioned anything about druids, arabs, celtic specialness or secret weapons, the use of which is only known to certain people. Thats because it isn't true. In my considered opinion - as a martial art its brilliant, and to some extents a code to live by, its not bad. As for the rest of it? No.