muay thai
Buddy Week
Define Defense will be hosting ‘Buddy Days’ during September 4th, 5th, 6th and 7th. During these days, everyone can bring friends, family, spouses and whoever else they want to join them in our classes.
It doesn’t matter if your guests have done any martial arts or fitness classes before, just invite them to show them what you do and to have some fun!
Anyone is welcome! The person who brings the most ‘Buddies’ will get a free Define Defense T shirt.

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Back to School Promo
13/08/12 14:37 Filed in: Martial Arts | Brazilian Jiu Jitsu | Self Defense | Fitness | TRX / Cross Training | Strength & Conditioning
From August 15th until September 15th, we will be running a Back to School promo!
Youth MMA Program:
Any child who signs up, gets a free custom Define Defense Gi (value: $49.99)
Mixed Martial Arts & Brazilian Jiu Jitsu Program:
New clients get a free custom Define Defense rash guard (value: $40)
TRX / Cross Training Program:
New clients get a free Define Defense T Shirt (value: $19.99)
Metroseen.com Video!
Check out our professional promo video, made by Metroseen.com
Music by Roy Dean (www.roydeanacademy.com)
Metroseen is the place where you'll find the best local businesses telling their unique stories on video! These are extraordinary videos telling extraordinary stories. As you discover each place through these vignettes, you'll find that you're discovering your community as well! Check out other videos on www.metroseen.com
Music by Roy Dean (www.roydeanacademy.com)
metroseen.com presents Define Defense - Boulder, CO from metroseen.com on Vimeo.
Metroseen is the place where you'll find the best local businesses telling their unique stories on video! These are extraordinary videos telling extraordinary stories. As you discover each place through these vignettes, you'll find that you're discovering your community as well! Check out other videos on www.metroseen.com
Why you don't want your kid to grow up top be a ninja...
When growing up, few things fascinated me more than ninjas. Their skills, mysteries, weapons and 'awesomeness' were amazing to me. Many kids, especially boys, admire them through comic books, media, movies and other sources. However, the facts are that ninjas were spies and mercenaries. Period! Ninjas are horrible role models and once you realize what kind of people they were, you don't want your child to have anything to do with them. That is why nobody in their right mind should be promoting ninjas and definitely not teaching (or claiming to) how to be a 'ninja'. That is, if a person knows what the real ninjas were like. We realize ninjas are a huge attraction but every serious martial artist should know better.
Some urban myths claim that the ninja descended from a half human, half demon. The more rational background is that ninjas came from samurai that betrayed their masters and worked for whoever paid them most. Ninjas practiced ninjutsu, which came from Ju Jutsu (the art of the Samurai), combined with other Chinese arts.
Ninjutsu was a kind of guerrilla warfare back then and did not put loyalty and honor central, as samurai did. Ninjas used seduction, poison, sneak attacks from behind etc. while samurai went head to head with their opponents in a more fair situation.
Ninjas came from different backgrounds, some may have been farmers, nobels or disgraced samurai. Daisuke Togakure for example, who fled instead of committing seppuku (ritual suicide).
This does not mean sneaky attacks from behind don't work or you should commit seppuku when you're asked to. But it does show you what kind of people ninjas were in a society in which honor, respect and loyalty were utterly important.
If you put it in a modern situation, you could say samurai were the honest working people and a ninja would be Bernie Maddoff...
However, all of this does not mean you cannot enjoy the use of ninjas in our culture nowadays. Take a look at the movie 'Ninja Assassin', a nice action movie, in which they actually portray the actual nature of the ninja. A good movie for the fan nonetheless!
Just be more cautious when using the term 'ninja' and please... Don't let your child grow up to be a ninja. There are much better and more practical martial arts out there.
By Sander Vanacker, Define Defense’s certified personal trainer and head martial arts instructor, based in Boulder, Colorado. Take a look at www.DefineDefense.com, www.TrainerVanacker.com or check out our videos on YouTube.com/DefineDefense !
Some urban myths claim that the ninja descended from a half human, half demon. The more rational background is that ninjas came from samurai that betrayed their masters and worked for whoever paid them most. Ninjas practiced ninjutsu, which came from Ju Jutsu (the art of the Samurai), combined with other Chinese arts.
Ninjutsu was a kind of guerrilla warfare back then and did not put loyalty and honor central, as samurai did. Ninjas used seduction, poison, sneak attacks from behind etc. while samurai went head to head with their opponents in a more fair situation.
Ninjas came from different backgrounds, some may have been farmers, nobels or disgraced samurai. Daisuke Togakure for example, who fled instead of committing seppuku (ritual suicide).
This does not mean sneaky attacks from behind don't work or you should commit seppuku when you're asked to. But it does show you what kind of people ninjas were in a society in which honor, respect and loyalty were utterly important.
If you put it in a modern situation, you could say samurai were the honest working people and a ninja would be Bernie Maddoff...
However, all of this does not mean you cannot enjoy the use of ninjas in our culture nowadays. Take a look at the movie 'Ninja Assassin', a nice action movie, in which they actually portray the actual nature of the ninja. A good movie for the fan nonetheless!
Just be more cautious when using the term 'ninja' and please... Don't let your child grow up to be a ninja. There are much better and more practical martial arts out there.
By Sander Vanacker, Define Defense’s certified personal trainer and head martial arts instructor, based in Boulder, Colorado. Take a look at www.DefineDefense.com, www.TrainerVanacker.com or check out our videos on YouTube.com/DefineDefense !
About Modern Martial Arts & Our Curriculum
When we talk about Modern Martial Arts, many still have many questions about what style it is, what you learn etc. Our Modern Martial Arts is exactly what it sounds: a modern approach to martial arts!
Traditional martial arts are very rigid and more often than not unrealistic and ineffective. That is why we created our own program and curriculum by combining the elements that DO work and put them together. Our program includes everything from striking, kicking, armlocks and chokes standing and on the ground, takedowns, throws, self defense, weapons defense and grappling. It was our goal to step away from the one sided traditional practices which are outdated and offer something better... much better. You'll be more diverse and better skilled when you train Modern Martial Arts with us.
Only techniques that meet our standards and we believe are practical in a real situation were accepted and made it into the curriculum. Once you master our entire program, you will be a very complete martial artist because you are know what to do in all these different situations. If you combine the Modern Martial Arts with the No Gi Brazilian Jiu Jitsu program, you will learn everything you need to know for competition and MMA. However, that is a decision you make for yourself, depending on your goals.
Our Modern Martial Arts program offers the best of many different styles, for example:
- Karate
- Muay Thai
- Krav Maga
- Japanese Ju Jutsu
- BJJ
- MMA
- Kickboxing
- ...
Not only will you be learning more effective techniques, you will also experience strength and conditioning classes, enjoy complimentary yoga classes etc. Creating our own program and curriculum makes our program and clients more open minded towards learning more skills and evolving with martial arts/self defense instead of being stuck with a firm skillset that has been the same for decades or centuries.
Underneath you can see our curriculum, which has all the belt ranks and test requirements (excluding the amount of classes needed to test).
As you see, our curriculum is very strong and well rounded. Every single attack has 3-5 self defense escapes (not shown) so you won't get stuck in a situation. Testing is not mandatory as some of our clients simply come to get in shape or to learn how to defend themselves, compete etc. Other clients do want to get higher ranks and reach that black belt. If you look through the curriculum, you will see our black belts earned it as they master a great amount of skills and also learn to be critical towards what is effective and what is not. We do NOT want to teach our clients anything that is ineffective as this gives false confidence and can put you in serious danger.
Our black belt curriculum is available to view in our facility (degrees 2-6) and includes physiology, coaching, CPR and much more.
At Define Defense, we guide our clients and teach them the best way we can to make them the best martial artist possible.
Modern Martial Arts Curriculum at Define Defense LLC.
Traditional martial arts are very rigid and more often than not unrealistic and ineffective. That is why we created our own program and curriculum by combining the elements that DO work and put them together. Our program includes everything from striking, kicking, armlocks and chokes standing and on the ground, takedowns, throws, self defense, weapons defense and grappling. It was our goal to step away from the one sided traditional practices which are outdated and offer something better... much better. You'll be more diverse and better skilled when you train Modern Martial Arts with us.
Only techniques that meet our standards and we believe are practical in a real situation were accepted and made it into the curriculum. Once you master our entire program, you will be a very complete martial artist because you are know what to do in all these different situations. If you combine the Modern Martial Arts with the No Gi Brazilian Jiu Jitsu program, you will learn everything you need to know for competition and MMA. However, that is a decision you make for yourself, depending on your goals.
Our Modern Martial Arts program offers the best of many different styles, for example:
- Karate
- Muay Thai
- Krav Maga
- Japanese Ju Jutsu
- BJJ
- MMA
- Kickboxing
- ...
Not only will you be learning more effective techniques, you will also experience strength and conditioning classes, enjoy complimentary yoga classes etc. Creating our own program and curriculum makes our program and clients more open minded towards learning more skills and evolving with martial arts/self defense instead of being stuck with a firm skillset that has been the same for decades or centuries.
Underneath you can see our curriculum, which has all the belt ranks and test requirements (excluding the amount of classes needed to test).
As you see, our curriculum is very strong and well rounded. Every single attack has 3-5 self defense escapes (not shown) so you won't get stuck in a situation. Testing is not mandatory as some of our clients simply come to get in shape or to learn how to defend themselves, compete etc. Other clients do want to get higher ranks and reach that black belt. If you look through the curriculum, you will see our black belts earned it as they master a great amount of skills and also learn to be critical towards what is effective and what is not. We do NOT want to teach our clients anything that is ineffective as this gives false confidence and can put you in serious danger.
Our black belt curriculum is available to view in our facility (degrees 2-6) and includes physiology, coaching, CPR and much more.
At Define Defense, we guide our clients and teach them the best way we can to make them the best martial artist possible.
Modern Martial Arts Curriculum at Define Defense LLC.