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Choke holds are very common in Judo. There are several techniques, all dealing with cutting off the blood supply to the head. The most common is the "straight choke", where the lapels are used. It is best if you use this while sitting face-to-face on top of your partner. You grasp his right lapel with your left hand and his left lapel with your right hand. Then you pull with your left hand and use the right hand to bring the lapel across the throat and push to tighten it. This takes effect in about 5 seconds. Another variation of it is if you are sitting with his back to you. Then you reach in front of your victim and grab his right lapel with your left hand and his left lapel with your right hand and pull down the right lapel while you pull his left lapel across his neck with your right hand. (Reverse if you are left-handed.) Your partner should smack you twice to signal you to release the hold before he loses conciousness. Wikipedia does not have an article with this exact name. ... A chokehold is a hold designed to quickly render the opponent unconscious in order to subdue them or win a fight. ... Judo (Japanese: 柔道 Jūdō; literally gentle way) is a martial art, a sport and a philosophy which originated in Japan. ... The word lapel can mean:- In standard office-type jackets, each of the two triangular pieces of cloth which are folded back below the throat, leaving a triangular opening between. ... Consciousness is a quality of the mind generally regarded to comprise qualities such as subjectivity, self-awareness, sentience, sapience, and the ability to perceive the relationship between oneself and ones environment. ...

Another is called the "cross choke" and can be done from any position facing your opponent. You slide fingers of both hands into your opponents shirt collar so only thunbs are exposed. Then you grasp the collars and pull him towards you while extending your elbows outward. Again, 5 seconds.

Probably everyone's favorite is this one: You are standing facing your opponent. Then as quick as you can, you place both hands on his shoulder and spin him around so his back is to you. This automatically places your forearms in the proper position. Assuming you are right-handed, you grasp your left elbow and place your left hand behind his head. Now you adjust your hold so your right forearm is across the left side of his neck, and you use the fingers of your left hand against the blood vessels on the right side of his neck. You now, with a little pressure using forearm and fingers, put him to sleep ergo the "sleeper hold". The blood vessels are part of the circulatory system and function to transport blood throughout the body. ... In an ideal situation, sleep should be undisturbed and experienced in the same room every night Sleep is the regular state of natural unconsciousness observed in all mammals, birds and fish. ... A sleeper hold is a martial arts technique named for its ability to seemingly make an opponent fall asleep in its grips. ...

There are many other choke holds used by black belt judoka. You can find them in any good judo book. Remember to practice caution when practicing these holds! They can be lethal. In many martial arts, each practitioners level is marked by the color of the belt. ... Judo (Japanese: 柔道 Jūdō) is a martial art, a sport and a philosophy which originated in Japan. ...