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>I can describe it quite simply, but to truly learn it you'll need a biofeedback device and you need to know what you're working towards.

I don't know, some gifs from different angles would sure have helped more given our lack of devices (though yes, the video does show one important angle).

At any rate the complaints aren't so much in the description but in it being yet another simple trick, of which we see thousands and few if any pan out especially to the level claimed here.



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