https://www.youtube.com/watch?v=BV-bfA5SokI

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This is a variation on the classic Okuri Eri Jime (sliding collar squeeze) that is so powerful I accidentally choked one of my friends unconscious with it at a seminar I taught recently.

I wanted to show you some of the footage so you could see for yourself just how quickly it can put someone out – note that I wasn’t using any power at all.