top of page
Athens Logo 0010.jpg
Keysi Logo 003.png

KEYSI by Justo Dieguez

Almost all Martial Arts claim to teach students self-defense in some form especially with today’s MMA (Mixed Martial Arts) craze. However, many of the techniques learned have little if any real-world application and the training concept is focused on rules for competition. The vast majority are based on competition training for kids, sport based entertainment for wanna-be athlete adults or programs claiming to be the real answer but really just repackaged foreign military basic training programs to make weekend warriors “combat ready” instantly.



In a real-life setting, you are not going to be in a ring or surrounded by a cage to keep other people out and there won’t be a referee asking “Are YOU ready?” or to stop the fight to keep you from getting hospitalized or killed.

It is also unlikely that you’ll be fighting a single person and you may even need to protect your family, friends or loved ones. Attacks can come from anywhere, and usually when you least expect them. You might be squaring off face to face against an opponent when a third-party attacks you from behind. KEYSI" was designed for those situations. Training you to be aware of your surroundings and protect yourself in real-life. It teaches you how to neutralize an attacker as quickly as possible by focusing on their vulnerable areas and tactical weaknesses. It prepares you to avoid and handle danger and to get to safety more effectively than other Martial Arts.

KEYSI " Justo Diéguez’s revolutionary method of self-defense is a way of understanding the reality on the street, where the Predator-Aggressor becomes a victim, and the victim becomes the Predator, Distant and Radical. The method is a vehicle designed to improve the quality of life, providing the practitioner with extreme physical, emotional and mental training.

Learn the Spanish urban self-defense method created by Justo Diéguez with just one aim in mind; Personal Growth through the development of personal protective Instinct. The movements, concepts and principles used in Keysi follow universal laws that are not limited by any system or style. Keysi develops mind and body, merging them together into a sole principle, providing the person with the necessary attributes to shape and define a way of life centered on personal growth. If there is something that differs Keysi markedly from any martial art, it is its principles; 

Transform Physical, Mental and Emotional weaknesses into Skills, and change the lives of people so that they believe in themselves, and inspire them to never give up.

Now available to civilians wanting military grade self defense options for everyday life.

Applying the principles of the revolutionary Keysi Fighting Method; simply known as KEYSI by Justo Dieguez since 2012; this self-defense system has been created to act and react while defending yourself. Employing the principle of Defense in Attack, the program instructs students in attacks targeting the most vulnerable parts of the body with the most devastating techniques, and training is not limited to techniques that avoid severe injury to aggressors, it provides students with options to deal with the most extreme violent situations.


KEYSI is a system of self defense and fighting that was created by Justo Dieguez. It is known for its close range techniques that employ a double arm cover over the head to serve as advanced shielding methods to defend and aggressively attack opponents creating one very flexible and devastating system that provides our students with an extremely effective way to defend themselves even against multiple simultaneous attackers. This system gives you some of the most uniquely effective options known in order to deal with defending yourself against violent street attacks employing the concepts of KEYSI created by Justo Diguez and made famous for dynamic displays of intense fighting skill in movies like the Batman series (with Christian Bale), Mission Impossible III and Jack Reacher (with Tom Cruise).                                                                                                                          


Keysi KFM Batman & Justo 2b.jpg

They key concept of KEYSI -- which means 'from the heart' – is predatory movement and protecting your head and body using your arms as a shield, even when you're attacked by multiple people, defending and attacking even from perceived positions of vulnerability like kneeling, sitting, lying down or having your back turned. The goal is to teach you how to react correctly yet instinctively, and use parts of your body (elbows, hammerfists, Headbutts) that are durable both offensively and defensively compared to parts of your body that might be prone to breaking more easily (like the hands) or sacrificing your base while standing by throwing sport based high kicking techniques.


​Recognizing the importance of expanding on instinctive response under stress; KEYSI applies Adrenaline Inoculation while developing controlled measured aggression under extreme stress, using simplistic and devastating attacks to the body's most vulnerable points with the view that aggressive efficiency is the most important component in a fight.

    KEYSI in the Movies 
Request more information!
The History of KEYSI

KEYSI "originated in Spain and was born from the life experience, study, and investigation of it’s creator and founder Justo Dieguez. Justo grew up in the streets of a small Spanish mining town. He came from a tough upbringing with a combination of street fighting and military special forces experience shaping what would become the Keysi Fighting Method (KFM).


With purely Spanish roots;  KEYSI, which is also known to be the creator’s / founder’s, Justo Dieguez’s, nickname, is a method of personal defense based on one’s instinct and personal growth. It was created through life experience’s encountered within the streets, influenced through year’s of studies and research in other martial arts." revealed to the public in 1980 and kept virtually hidden to the majority til now.

Keysi Oct 2018-002.jpg


Keysi Oct 2018-001.jpg
Keysi Oct 2018-004.jpg

Training also covers development of situational awareness to enhance understanding of your surroundings, learning to fully comprehend the psychology of a street confrontation, and identifying potential threats before an attack occurs. It also addresses ways to apply physical and verbal methods to deal with and avoid violence whenever possible. It develops mental toughness, using controlled scenarios to strengthen mental fortitude in order for students to control the impulse and not do something rash, instead, attack only when it necessary and as a last resort but with devastating results and a vicious effectiveness not normally available to the civilian sector.

The system progresses from empty hand self-defense, through edged weapon encounters to firearms employment. Known for its focus on real-world situations and its extreme efficiency  RUC takes the most simple and practical techniques of other fighting styles and  makes them rapidly teachable to ordinary people that want dynamic options to defend themselves applying a revolutionary philosophy emphasizing simultaneous defensive and disgusted offensive maneuvers.

bottom of page