The Overload Principle As Applied to Nerve Motor & Pressure Points
Our style of Can-ryu Jiu-jitsu was created incorporating the PolicePressure Points System, a set of nerve motor and pressure points specifically chosen by Professor Georges Sylvain (our style’s founder) for their ease of use and effectiveness for law enforcement. There are a number principles that are taught related to their use to make the system’s application more effective. One of these is the “overload principle.” (more…)
Pressure Point of the Day: Mandibular Angle
A pressure point from the Police Pressure Point System as established by Professor Georges Sylvain, the mandibular angle is a nerve pressure point (as opposed to a nerve motor point) that can cause great pain to the recipient, yet causes no injury. Read Nerve Motor Points vs. Nerve Pressure Points to understand the differences. This makes it useful for controlling a person when you wish to limit the amount of force used, like when you’re extricating a non-compliant but non-assaultive subject. Not everyone is sensitive to this pressure point though, and subjects that are pain-resistant because they’re extremely drunk or high may not even feel the pain so it may not be a good choice if the stakes are high. (more…)
Pressure Point of the Day: Lateral Femoral
In the Police Pressure Point System developed by Professor Georges Sylvain, founder of Can-ryu Jiu-jitsu, the lateral femoral area is not actually a pressure point but a motor point. The difference is that an attack to a motor point can result in a motor dysfunction when struck, while a pressure point only causes pain. In the case of the lateral femoral area, when attacked, it can result in a motor dysfunction in the leg, making it difficult to stand on or use it. It can also be quite painful.
The lateral femoral is centred on the outside of the thigh, around midway between the hip and the knee, where the nerve is closest to the surface of the leg. The nerve affected is the lateral femoral cutaneous nerve (see area in red on the right in image below). Please note that the centre point in which the effect is greatest can vary from person to person, but a strike to this spot within about a 5″ diameter will still affect most people.
In my early training days, when I was young and stupid, I didn’t think that a leg kick using the shin could be as effective as a knee strike. To prove the point to a Taekwondo black belt friend of mine, I volunteered to take a leg kick to the lateral femoral at 50% power. I didn’t fare much better than the fellow in the above video, hitting the ground like a sack of potatoes, gasping in pain. The full story of this embarrassing anecdote is in in chapter 10 of my book, Weapons of Opportunity.
In Can-ryu Jiu-jitsu, we teach the above leg kick, but we also like to use our knees to strike the lateral femoral. Knee strikes to the lateral femoral can be useful for law enforcement for controlling an unruly suspect that is causing trouble while being escorted. It’s nice because it is a low-level force option that doesn’t generally cause injury. That being said, my favourite self-defense technique that uses the lateral femoral is against a side headlock before the attacker gets it fully applied. See the video below for a quick demo (not our greatest film work, but you can get the idea).
If you decide to train strikes to the lateral femoral, or any motor point, it is safest to limit the amount of power you apply on your partners, otherwise you’ll find yourself short of volunteers to receive said strikes. We stick to around 5% power (or less depending on the partner) when training, enough that your partner will feel it when on target so they can provide feedback on target location, but not so much that they’ll experience lingering pain or difficulty using the leg for the rest of the night. This is the amount of power I used in the above video.
One last note on the lateral femoral is that it may not be effective against people who are drunk, high or in the middle of an adrenaline dump. When in these states the responses of the subject’s nervous system don’t always register the effects of strikes to this area. They may feel it after they have sobered up or have come down from their adrenaline dump, but that isn’t useful if you need the effects in the moment, so in this situation, it may not be a great choice.
Nerve Motor Points vs. Nerve Pressure Points
In some of my recent posts, I referred to nerve motor and pressure points. There were a few questions about the differences between them, which I will address in this post. In the style of Can-ryu Jiu-jitsu, we teach the use of a pressure point system known as the Police Pressure Point System, which was developed by Professor Georges Sylvain, founder of our style.
After a great deal of research, Professor Sylvain selected what he believed were the most effective nerve points for police use, ones that he considered to be most effective on the greatest number of people. These nerve points are divided into ‘nerve motor points’ and ‘nerve pressure points.’
Nerve Motor Points
Nerve motor points are nerve points on the body that, when struck, cause some form of motor dysfunction. The solar plexus, causes motor dysfunction in the muscles that control breathing. The brachial plexus origin, located on the side of the neck, causes a disconnect to the brain resulting in motor dysfunction in the entire body, from a stunning effect to full unconsciousness. The lateral femoral located on the outside of the thigh causes motor dysfunction in the leg making it difficult to use or even stand on temporarily. Beyond motor dysfunction, most of these nerve points are also painful when struck.
Nerve Pressure Points
Nerve pressure points, on the other hand, cause pain as a result of pressure, but no motor dysfunction. The tip of the nose, for example, is made up of a series of sensitive criss-crossing nerves and when you apply pressure on it with a palm, the result is usually quite painful. The mandibular angle, located below the ear, behind the jaw bone, can cause extreme pain when you apply pressure with the tip of your thumb. The lateral thoracic comprises of a series of intercostal nerves located between each rib. When you compress these nerves against the ribs with a knuckle, kind of like playing the xylophone, it can cause a lot of pain.
Below is a couple of charts for reference. The points that are written in black are motor points while the ones written in grey are pressure points.
Some nerve motor and pressure points are easier to use than others, and not all the points are appropriate for use in all self-defense situations. But on the whole, the more your practice targeting them, the more effectively you’ll be able to use them in a real situation. That being said, as Professor Sylvain used to say, some people are just mutants and aren’t effected by certain points due to differences in their physiology. Also, people who are drunk or high are often less affected by nerve points.
This makes it that much more important to be able to use a variety of targets both within and outside the Police Pressure Point System. Nerve points are all well and good, but there are few people who can withstand a solid strike to the groin. And on the flip side, if all you know how to do is kick the groin, you are very much limited in your options if that first strike misses and your attacker starts protecting it.
The Difference Between Fine & Gross Motor Striking Skills – Part 1
In Can-ryu Jiu-jitsu, we first emphasize the importance of gross motor skills in our core curriculum as it makes the techniques easier to learn and apply in a real self-defense situations. That being said, if all we ever trained in was gross motor skills, there would no long term development for us as martial artists.
It’s all well and good to learn to aim strikes for broader surfaces we you first start to train, like the head/neck areas or center body mass where there is a good chance of hitting a variety of potent targets. But as you train, you ultimately want to start aiming for specific target locations to increase the effects of your strikes. This is one aspect of striking that I consider to be a fine motor skill that we teach. (more…)
The Importance of Using Distractions
The other day, one of my students who is a member of the RCMP (Canada’s national police) came to me and told me of how he recently had an on the job experience in which the importance of using a distraction was emphasized.
This student is not large, but still has to apprehend people all the same. In this recent incident, a very drunk man was walking in the middle of a busy city street during rush hour. He first tried to talk the man off the road, but he was resistant. My student had to arrest the man for his own safety so he asked the man to put his hands behind his back, while he took hold of his wrist. The drunk man, however, was resistant and pulled his arms into his body, saying no and refusing to cooperate.
At this point, my student kicked him in the shin. The man, distracted by the sudden pain, relaxed his arms, making it easy for my student to get control of his arm, take him to the ground, then cuff him.
This is a perfect example of how a distraction can be used in a law enforcement scenario. It also works well in a self-defense context. The reason why it works is because the conscious mind can’t focus on two things at the same time. The sharp pain caused by the shin kick caused the man to distract his focus from his resistance to the more immediate shock of the pain. It need not be a shin kick specifically though. It can be a strike to a nerve motor point, pressure to a nerve pressure point, a pinch to a sensitive area, a strike to the groin, etc.
The shin kick is one of my favourite choices as a distraction (if you’re wearing strong shoes). Because it is low, people often don’t see it coming. When you use a shin kick, your hands are free for defensive purposes. Also, in my student’s case, he was very visible in the public eye, dealing with his suspect in a busy city street. The shin kick in this case is pretty innocuous and doesn’t look overly violent, even though it performs the task effectively. It is much more subtle than using fists, knees or elbows.
Anyway, I was very pleased to hear how this student applied our martial art effectively to accomplish what he needed to do on the job, only using as much force as was necessary to nullify the situation. Does anyone else out there have any similar experiences using distraction strikes that they would like to share?
5 Useful Open Hand Strikes for Self-defense
Last week I wrote a post about the usefulness of open hand strikes vs. punches for self-defense. This week, I’ll discuss 5 specific open hand strikes that I teach for self-defense and how they are useful.
Here is a video of the 5 open hand strikes I will discuss:
1. Straight Strike. A straight strike using the base of the palm is best used to the bridge of the nose. This can cause a lot of pain, as well as the tear ducts to empty. It can also break the nose. In a social situation self-defense situation in which you don’t want to injure a person seriously, you can place your palm on the tip of the nose and vigorously press it back and forth as you push your palm into the nose. The resulting pain from pushing into the many small nerve endings in the tip of the nose can be an effective way of pushing someone away.
2. Open-hand Hook. The body mechanics of this strike are similar to that of a hook punch. It looks like it’s just a big old slap, but it’s much more than that. The difference is that you get greater reach and that it causes knock-outs in a different way. This strike causes a concussive effect on the brain, which can effectively stun a person or knock them unconscious. Think of the skull as being like a pickle jar, while your brain is the pickles. When you hit the skull hard it rattles the pickles against the inside of the pickle jar” (i.e. your brain on the inside of the skull), which is what causes the stunning effect. Also, if you happen to hit the ear, you can break the ear drum and cause a lot of pain. Even if it lands only on the face and not the head, the resulting “smack” can be distracting enough to give a person pause.
3. Ridge Hand Strike. We most often use the ridge hand strike on the brachial plexus origin, a nerve motor point that results in stunning and potentially knock-outs when struck. When attacking this area, we use the inside of the wrist bone, rather than the hand itself. A ridge hand strike using the inside knuckle as the striking surface, can also be used to attack the nose when on an angle or the temple from straight on. Warning: a strike to the temple has the potential to be a fatal blow and should only be used in life-threatening situations.
4. Back Hand Strike. We use this strike also on the brachial plexus origin, using the back of the wrist bone.
5. Open hand Uppercut. This works in much the same way as a traditional uppercut. You need to close to your attacker to use it. When you strike the jaw right on target, the impact can stun or knock a person out, as is evidenced in many professional fights. It is said that this is caused by the temporal mandibular nerve, located directly behind the “hinge” of the jaw. Essentially, the jawbone slams back against the nerve, basically causing a form of sensory overload that can shut down the brain.
The Importance of Contact for Developing Strike Targeting
I’ve been to lots of different dojos, some that were the same art (Jiu-jitsu) but a different styles, and some that were different martial arts altogether. One concept that I have come to appreciate in my own style is that of training strikes with light contact.
One of our training rules that we apply every time we’re on the mats, is that when we train with our ukes all strikes should be practices with light contact, about 2-5% power (to start with) depending on the person’s strength. There are several reasons why, which I would like to elaborate on in this post.
1) Targeting. A number of the targets we use are nerve motor points (i.e. brachial plexus origin, solar plexus, lateral femoral, anterior femoral, etc). These targets all have very specific locations and are by far more effective when accurately targeted. Anyone who has trained these targets knows that, in some cases, the difference between being on and off target can be as small as millimetres. The only way to develop an intuitive feel for the locations is to get feedback from your ukes all the time. Eventually, your muscle memory takes over and you don’t have to intellectualize it. And that’s when the use of those targets becomes really useful. This also applies to some targets that are not nerve motor points, like the groin. Of course, we wear cups so that we more safely practice our targeting, but even with the groin protection, it’s important not to use much more than 2-5% power for obvious reasons.
2) Time-On-Target (TOT). This concept makes strikes to nerve motor points even more effective. When we strike these types of targets, we emphasize leaving the striking surface (whether it’s your elbow, knee, fist, forearm, shin bone etc.) on the target location for 3/4 of a second. This allows the fluid shock waves to transfer from your striking surface into the target, increasing the effects. Think of it like hammering a nail. If you hammer a nail and pull the hammer back as it strikes, the nail doesn’t go in as far. Conversely, if you hammer the nail and leave on the nail head, the nail drives in much further.
3) Understanding the effects. If a student doesn’t understand the effects of their strikes from the uke’s perspective, they won’t be able to help other students with their targeting. Also, when a student knows what it feels like to receive blows to the various nerve motor points, it gives them respect for the power that comes from their use. Nerve motor points like the lateral femoral, anterior femoral, radial nerve, etc. can cause great pain. While points like the brachial plexus origin can knock a person out, and the solar plexus can leave a person winded and breathless. By training with contact, students will understand and respect how effective striking to nerve motor points can be and will not be as likely to “goof around” with them amongst their non-practicing friends and family.
I can understand many dojos’ reluctance to train with contact. They fear that it might get out of hand and that students will get hurt. And even if students don’t get hurt, they may find the process altogether intimidating and not want to train. But contact need not be injurious or intimidating. Students should start by doing very light contact at slow speeds, gradually increasing the speed and power levels as they come to understand the effects. I’ve used this method with even the meekest, mildest individuals with positive results.
Without any contact training… well, I’ve seen high level martial art practitioners doing strikes with little to no understanding of the targets that they, in theory, are trying to affect. And from watching these people strike targets, it’s easy to question whether they would be able to affect an attacker in a real situation in the way they intend.
Dealing with a Nose Bleed? Give it the Finger!
Nosebleeds are not uncommon in martial arts schools. They can occur randomly during exertion or from being punched in the nose. There have always been disputes as the best way to stop a nose bleed. Some say to pinch your nose at the bridge and hold your head forward. Some say to pinch and hold your head back. I say give it the finger.
The method I use has worked every time I’ve used it and seen it used. I first saw it demonstrated during a black belt seminar when Professor Georges Sylvain, the founder of Can-ryu Jiu-jitsu, used it to help a student who didn’t manage to keep his hands up high enough during a 2-on-1 sparring session. It looks crude and is mildly painful, but it works.
Here’s how it’s done. Support the back your patient (or victim’s) head with one hand. With the other hand, use your middle finger or the blade of your index finger to drive in and up into the infra-orbital nerve under the base of the nose at the top of upper lip (see photo below). Apply even pressure and hold the position for 30-40 seconds. The person receiving the treatment will likely experience mild discomfort (it is a pressure point). After the 30-40 seconds is up, gently ease off the pressure. The nosebleed should be gone. DO NOT use this method of the student is bleeding profusely and a broken nose is suspected.
I used this method just last night on a student who had a random nosebleed during class. He said it worked brilliantly at stopping the bleeding, plus his airway was clear since there was no clot blocking the passage. This is because it doesn’t work the same as the other methods that work on the basis of creating a clot. I think maybe the nerve stimulation causes blood flow to be directed away from the area. I don’t know for certain why it works, but it does. Every single time.
Give it a try, but do so at your own discretion and risk. I’m not a doctor, though doctors in my class have been impressed by its effectiveness.
Pressure Point of the Day: Solar Plexus
A strike to the solar plexus, as demonstrated in this video by MMA fighter Megumi Fujii, is an effective way to subdue an attacker without causing injury. The solar plexus is a nerve motor point that, when struck, causes temporary motor dysfunction to the surrounding muscles, those which are used for breathing. It’s not simply a matter of having the wind knocked out of you. For a short period of time, you have trouble breathing both in and out.
One day I was sparring with a student of mine named Alec. He was the youngest in my class at 19 and oozed natural talent. That being said, on this particular day, he was keeping a very high guard to stop incoming blows to his head while ignoring any kicks I aimed at his body. After the first 2-minute round, we took a short break, giving me the chance to address the weakness in his guard.
“So Alec, I noticed that you’re not blocking any of my strikes to your body,” I put forward.
“Yeah, I just figure I’d rather take a shot to the body than a shot to the head,” he replied, with the cocksure attitude that goes hand in hand with youth and talent.
“You do realize I’m not striking with any power, right?” I queried. “And I’m aiming at your solar plexus.”
“I still think I can take a shot to solar plexus, even if you were hitting with full power.”
I looked at him, a tiny smirk playing across the corners of my mouth, betraying my intention. “Okay then. Let’s do the second round.”
In the second round, Alec came at me with a right cross for his first attack. I sidestepped the blow, snapping a quick roundhouse kick to his solar plexus, making solid contact. Alec grunted as he received the blow, pausing a moment before continuing the round.
Again, he came at me, leading with a couple of jabs, following with another right cross. And again, I do the same sidestep-roundhouse kick combo, hitting home on his solar plexus. He stopped, knees buckling as he ineffectively gasped for air. “I have to stop,” he croaked before crumpling to the ground.
I let him regain his composure for a couple of minutes and get back on his feet, after which I approached him. “So… what did we learn?” I asked him with an admittedly cheeky tone.
“I said I could take one shot to the solar plexus, not two!” he retorted sheepishly.
“And that wasn’t even full power. That was about 50% my full power.” I knew I wouldn’t need to use full power to make my point. I wanted to him to learn a lesson, not hate me.
His eyes widened in disbelief. “I think I’d rather take a shot to the head than your full power kick to the solar plexus.”
The second blow would have had even more effect than the first due to the overload principle. When striking nerve pressure or motor points, if you attack the same nerve point twice, you’ll notice a significant increase in effectiveness the second time around. That’s because the first blow weakens the nerves, causing them to be more sensitive when struck again.
After that sparring session, I never again saw Alec disregard incoming body shots.