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15

Your confusion may be that you're thinking of the nunchaku chain wrapping around the neck, as a choke to cut off air, but the proper technique uses the sticks to apply pressure to the carotid arteries on either side at once, using the target's neck as the fulcrum for the levers.


14

Pretend chokes The video is of a lame, contrived demo. The "choke" in it is not performed effectively. It's a farce of a choke. The reason this strutting bodybuilder is "immune" to the choke is that it's not a legitimate choke in the first place. If you know someone who thinks they can't be choked, I think Marcelo Garcia would be ...


12

Choking with hands wrapped around the throat is not efficient The goal of chokes in BJJ and judo is to cut off blood to the head at the carotid arteries and jugular veins, which can render a person unconscious in seconds. Cutting off air takes much longer, so blood is strongly preferred. If you are trying to do this with each hand squeezing on both sides of ...


12

According to forensic science it is pressure applied to the carotids and not the veins that causes loss of consciousness, although pressure on the veins leaves specific signs of strangulation when they bust, but are not a cause of death or unconsciousness. (pg. 297, 14.2 Strangulation, see section #2 re: carotid compression). Although the deeper carotid ...


11

Philip Klöcking has done a good job covering what the person being choked experiences. I will try to cover other considerations. In my experience, feeling pain is largely separated from whether a choke successfully cuts off blood flow. Pain will usually cause people to tap even when the blood choke is not that effective. You can also choke such that the ...


11

Subjective experience report incoming: It very much depends on the quality of the application and the strength ratios. The better the technique is applied and the stronger my opponent in relation to my choke resistance training is, the faster it will end. I can have students choking me at full strength without fading out just by resisting through neck ...


8

What I've picked up over the years about how blood chokes actually work - and I could be wrong - is this: There's a nerve in the neck called the Vagus nerve. One of its many functions is to sense blood pressure of the arteries in the neck. When you compress those arteries, it will cause blood pressure to increase rapidly. The Vagus nerve senses it and ...


7

Yes, arm triangles are legal provided you trap one of uke's arms with their head. According to the IJF Refereeing Seminar 2018: An action like kata-sankaku (sankaku done with the arms) is allowed in a newaza situation. Here are some examples of its use in international competition: World U21 Championships 2015 (Jorre Verstraeten) Jigoro Kano Cup Tokyo ...


7

I used to play water polo in high school, and some of the lifeguarding maneuvers (such as taking the person under the water with you) can lessen these things. The other thing that worked well for me (especially once I established a reputation for it) is if they are willing to choke you, then they should be willing to suffer the consequences. I would grab ...


7

Below is a list of chokes and how they fall into the 12 current Kodokan shime-waza classifications. Note that like with certain throws, there is often debate as to whether certain choke applications fall into one category or another (e.g. okuri-eri-jime vs kata-te-jime). Techniques denoted with an asterisk are not competition legal (* † ‡). Letter ...


6

If you are not a trained first aider, then I strongly suggest you did a course as soon as possible. As David Liepmann said, the recovery position is generally safe. However, if you are not a trained first aider, you might miss either something or do the wrong thing or exacerbate things that will lead to the victim dying. I am not a lawyer, nor do I play one ...


6

The orthodox BJJ response to someone on your back with hooks is to first strip the hooks then shuck them off, while protecting the neck. One can do this by standing upright and pushing the hooks down, but the more orthodox method is to bend forward to touch the ground, keeping the hips high, in order to make them slip forward over your shoulders once they ...


5

For the practical part, first see Sean Duggan's answer. Then consider the fact that even though it is not technically "choking", the nunchaku will work the other way around as choking instrument perfectly fine, too. What you basically have is two levers that allow you to exercise a large amount of force (roughly 1:10) on what's wrapped in the chain. That may ...


5

No, you cannot be immune. IMHO even training to "resist" it is stupid, completely stupid. If someone is choking you out, he WILL succeed, even if you resist for 5 seconds longer. Air choking is easier to notice ( ... you can't breathe) and fighting against your opponent's hold is a lot easier. It will help endure it, allow you to take little bit of air ...


5

The following study (on hadaka-jime and nami-juji-jime) supports the claim that compression of the carotid (and vertebral) arteries is associated with loss of consciousness in judo-style chokes: By means of continuous wave doppler the effect of two choke holds (Carotid sleeper, Nami-juji-jime) on the carotid and vertebral arteries was investigated. For ...


5

The two basic mechanisms when choking are blood and air. A skillful blood choke will knock someone out within seconds, say 2-20. A pillow choke blocks air, which takes much longer ~2? minutes. Death basically occurs when the brain has been deprived of oxygen for minutes. With a pillow, the person's brain is already oxygen starved when they pass out. If you ...


4

If you are uncomfortable with something that is happening to you, then tap. If your partner taps, then stop and let go with no questions asked. All questions wait until after disengagement. This is basic safety. Crazy things happen. I have seen something done safely 10,000 times, but also one time that resulted in a significant injury. If pain is telling ...


4

New user and first time poster here so please correct me if I am out of line. One factor I don't believe was addressed was being able to tell if someone is going out from BEHIND. An example would be and bow and arrow choke where your training partner may have both hands in the collar attempting to defend. In this case it may appear and feel as if he is ...


4

The three main mechanisms of choking technique are: Choke Mechanism Synonyms "blood" choke compresses the sides of the neck, restricting blood flow to head sleeper hold, carotid restraint, vascular neck restraint "air" choke compresses the throat (trachea), restricting breathing tracheal choke, throttle body constriction compresses ...


4

Yes, there are other constriction techniques. These are a few examples, not meant to be exhaustive. As a philosophical matter, I think you should always be looking to further break uke's structure and constrict their movement and breathing; this is maximum efficiency. yoko shiho gatame: Tori is on the side with extended legs, one arm around the head, and ...


4

As of Germany, all of these would be considered a form of hadaka jime since every choke that is not with the legs and not executed using the gi is classified as such. That being said, we do have strange classifications at times (Hofmann, not Kodokan), so that one may be off as well. I, personally, think it makes a lot of sense here, though. For what it's ...


3

Legal My personal understanding (sorry, no official guidance) is this use of the skirt portion of the jacket is legal. This is basically the same use of the opponent's gi as in kata juji jime. The rules are imprecisely written, which is very annoying. "Using only the fingers" would also seem to preclude ryote jime, but ryote jime is legal. Using a belt ...


3

Just to add to mattm's answer - the IJF has now codified its position in the current ruleset: So in short, the following submissions are/aren't legal: Technique Legal Anaconda ✅ Kata-gatame ✅ D'arce1 ✅ Peruvian necktie ✅ Arm triangle from guard ❌ Standing arm triangles ❌ AKA Ungvari / Brabo choke / Japanese necktie


3

They will not be moving their eyes can still be open and their muscles can still be flexed. Ways to prevent this if in a competion just tap if in a self defense situation pull the wrists down followed by chin down shoulders up.


3

I took the question "What happens to a person being choked" a bit more physiologically. From what I understand (from a 'straight dope' posting almost 20 years ago), a properly applied "blood choke" (as opposed to an "air choke), fools the body's defense mechanism into thinking that the brain is suddenly receiving a spike in blood pressure - which can be ...


3

When a choke is properly applied, no amount of "neck flexing" will save you. Let's use a rear naked choke for example. The attacker is behind the victim. The choking arm forms a 'V' shape at the front of the neck with the elbow pointing down. This is to target the carotid arteries. Closing one of the arteries will not completely stop blood flow to the brain....


3

I am only a low-level referee, but here is my best interpretation of the rules for this choke. I would call this version legal. Although uke's left arm is separated from uke's head, tori has control of uke's left shoulder and arm, either with an overhook or underhook grip. I would call this version illegal. This version actively isolates pressure only on ...


2

According to the following paper, tensing the neck muscles can indeed reduce pressure on the carotid arteries during a judo style choke: Tensing the neck muscles can reduce the effect of choking. [...] Ein Anspannen der Halsmuskulatur sowie Abwehrgriffe können aber einen Gefäßverschluß verhindern (Missliwetz und Denk 1990). Carotid and vertebral artery ...


2

Plucking the hands off the neck is not a realistic response because no one who is realistically trying to hurt someone with a choke places their hands on the neck from the rear. The only exceptions are if they trying to ram a person's head into a wall (which is not a hold) or they are giving a rather pleasant neck massage (also not a hold). Standing rear ...


2

You can simply see it as a tool, and depending on the circumstances where it happens. Usually, and what I personally find naturally, is the turning motion while raising one arm (biceps to your ear and turning around to loose the choke) more convenient. Plucking, is requiring a certain degree of flexibility as some people can´t really do that motion properly ...


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