Articles | YMAA
Free Shipping (US Only, Min. $70+ Conditions apply)    |   Save 60%

Sumo: David vs. Goliath
February 10, 2017
In Malcolm Gladwell's very popular book David and Goliath: Underdogs, Misfits, and the Art of Battling Giants, the author deeply explores the lessons behind the three-thousand-year-old Biblical story of how the small young David defeated the giant warrior Goliath.
MMA Champion, Lyoto "The Dragon" Machida, Incorporates Sumo into his Fighting Style
January 5, 2017
A prime example of how a MMA fighter has incorporated sumo into his game is former Ultimate Fighting Championship (UFC) Light Heavyweight Champion Lyoto "The Dragon" Machida. He has a strong sumo background, but his primary style is traditional Shotokan karate.
Sumo: A Case Study in Size vs. Technique
November 7, 2016
Sumo is the fusion of honored ritual with unbridled power. Even in a combat sport like sumo, where great body mass and girth are often winning factors, superior technique can overcome size and strength.
The Hidden Roots of Karate and Jujitsu
October 5, 2016
This article will discuss several martial arts to illustrate how different looking martial arts are apparently closely related and how the idea of hidden historical roots applies to many martial arts. First the origins of karate and Okinawan sumo will be explored. Then the root of jujitsu will be uncovered.
Brain Damage: Do Football Helmets Help?
September 5, 2016
Recently, the National Football League is facing a 765-million-dollar lawsuit filed on behalf of more than 4,500 former players regarding the concussions and potential chronic traumatic encephalopathy (CTE) sustained during their careers. Similar lawsuits are underway against the National Collegiate Athletic Association as well as the National Hockey League, and football helmet maker Riddell is facing multiple lawsuits over claims about the effectiveness of their helmets at protecting athletes from concussions.
The Donkey - March 7, 2016
I am not, nor have I ever been, the most physically competent martial artist. It takes me inordinately more classes to attain technical proficiency in many areas than it does others. I am tall and fairly agile, but I do not have much muscle mass. And then, over the past few years, two significant medical challenges have crossed my desk. Couple all this with the fact that I am now in my 60s, and a potentially bleak image begins to materialize.
Foam or Knuckles—Navigating the Illusion of Safety - January 18, 2016
If you really want to understand how gloves contribute to the safety of our athletes, especially when it comes to their brains, take a closer look at the physics behind taking a punch with a bare fist or a glove.
Dukkha Hungry Ghosts - December 28, 2015
As Mai and the crowd watch in frozen horror, the Lexus slowly rolls again until it's on its top; the front-end still nose down into the water. After a moment, only the rear back tires are still above the surface. Then they too slip beneath the bay.
Dukkha:  Hungry Ghosts - A Sam Reeves Martial Arts Thriller - November 16, 2015
The following is an excerpt from Dukkha: Hungry Ghosts.  Sam Reeves and his girlfriend Mai are enjoying a morning at Saturday Market, a sprawling weekend bazaar along Portland's waterfront. From the top of a bridge at the market, a crazed man, "Tonto," announces that he will be the crowds designated shooter.
Dukkha: Hungry Ghosts - A Sam Reeves Martial Arts Thriller - October 26, 2015
Prologue from the book: His legless torso swings back and forth between his arms, as he hand-walks along the dim but ornately lit cobblestone path that meanders about the lavish yard through tall bamboo, past large stone Asian lanterns, around half a dozen towering palm trees, and encircles a large pond. Twelve-foot high brick walls border the large yard on three sides.
Guns, Knives, and the Hollywood Death Sentence - September 21, 2015
In order to become a successful screenwriter in Hollywood, you need to watch a lot of movies, so you can learn from the screenwriters who came before you, and so you can get a feel for what else is out there and popular today.  Unfortunately, this important part of a screenwriter's education is also how Hollywood ends up propagating and recycling incredibly stupid ideas over and over again to the point where the audience just accepts it without question.
Protecting the Brain from Trauma: A Home Experiment to Show We Can Do Better - September 7, 2015
If you put on a football helmet right now and smacked yourself in the head with your hands, you might notice you can hit yourself pretty hard before you start to feel pain. You could even grab a stapler or a coffee mug and hit yourself with that. If you are like me, smacking yourself in the head is the first thing you do when you put a helmet on, just to test it out.
Political Turmoil in Taekwondo - August 18, 2014
On December 31, 2013, Grandmaster Kyu Hyung Lee, taekwondoist extraordinaire, formally resigned his post as president of the esteemed Kukkiwon after holding the position for a mere matter of months. Quickly replaced by Man Soon Jang, Lee claimed his startling decision was founded on irreconcilable differences between two leading factions; one consisting of officials whose behavior is largely motivated by politics, and a second group of martial artists, spearheaded by Lee, with the purity of taekwondo at heart.
The Heart of Taekwondo - July 7, 2014
When the heart of taekwondo beats, it gives life to the advancement of supreme discipline, the achievement of noble character, and the cultivation of an enlightened worldview. It breaks the bonds that bind us to the Earth and again, as adults, allows us to feel the wind beneath our feet rather than merely around them.
Dukkha Unloaded-A Sam Reeves Martial Arts Thriller - June 26, 2014
A rush of wind sent debris skittering along the empty sidewalks, filthy gutters, and streets long in need of repair. Though few vehicles passed through the darkened skid row intersection of Northwest Third and Couch at three a.m., its lone traffic signal, swaying in the wind, continued to cycle its colors, casting hues off the sides of old buildings and the cracked windshield of a decaying station wagon propped up on four rusted wheels.
A Few Fighting Techniques Found in the Dukkha Series - June 16, 2014
Many kind reviewers for Dukkha: The Suffering, Dukkha: Reverb, and Dukkha: Unloaded have commented on the realistic violence, in particular the fight scenes. This is always nice to hear because I work hard to infuse the scenes with authenticity and truth. After spending 30 years around man's inhumanity to man, first as a Military Policeman in Vietnam and then as a street cop for 25 years in Portland, Oregon, I find many authors' and movie directors' depiction of violence to be sadly lacking or simply off base.
On Writing Dukkha Reverb - October 28, 2013
Dukkha Reverb is the second book in the Dukkha thriller series, published by YMAA Publications. The first is Dukkha: The Suffering.
Principles Common to Both Qin Na and Ground Fighting - September 30, 2013
A lever is the simplest of machines, which utilizes a rigid bar to rotate around a fixed pivot point called a fulcrum in order to exert force on an object (load). If the resistance or load exceeds the strength of the bar, the bar will break. Biomechanically speaking, the arm is a bar, and when the fulcrum is at or above the joint, breakage can easily occur.
Dukkha Reverb - September 9, 2013
The following is an excerpt from Dukkha Reverb, a Sam Reeves martial arts thriller.  After six weeks of being intensely investigated for the accidental killing of a young boy, Portland police detective and martial arts instructor, Sam Reeves, travels to Saigon, Vietnam to visit his newly found family. 
History and Philosophy of Taekwondo - Part 2 - August 5, 2013
Similarly rooted in Chinese culture, the Baduanjin routine, or Eight Pieces of Brocade, a medical qigong therapy whose performance is professed to impart a silken quality to the body, dates back to AD 1300 where it appears in the Xiuzhen shi-shu (Ten Compilations on Cultivating Perfection).
History and Philosophy of Taekwondo - Part 1 - July 29, 2013
Long before the advent of sport sparring and the invention of modern safety gear, in a time when to fight meant to defend one’s life from almost certain death, an ingenious method of transmitting martial arts skills from venerated master to loyal disciple was developed.
The Evolution of Tae Kwon Do Poomsae, Hyung and Tul-Part 2 - June 17, 2013
Throughout the 1950s and early 60s, when Tae Kwon Do, still referred to as taesoodo, tangsoodo and kongsoodo in many circles, was in its infancy, poomsae practice consisted largely of exercises derived from these Okinawan, Japanese and Chinese disciplines.
The Evolution of Tae Kwon Do Poomsae, Hyung and Tul-Part 1 - June 10, 2013
Long before the advent of sport sparring and the invention of modern safety gear, in a time when to fight meant to defend one’s life from almost certain death an ingenious method of transmitting martial arts skills from venerated master to loyal disciple was developed.
Surrender! Clear Your Mind To Learn A New Skill - January 14, 2013
After teaching taekwondo for many years, I have come to some concrete observations. As an instructor and school owner I have noticed that many new students have a difficult time acclimating to Eastern customs.
Excerpt from DUKKHA—The Suffering, A Sam Reeves Martial Arts Thriller - November 26, 2012
Dukkha: a Pali term that corresponds to such English words as pain, discontent, unhappiness, sorrow, affliction, anxiety, discomfort, anguish, stress, misery, and frustration.