Im not trying to be cynical, just curious...would the fact that the hand was held up in the air for a period of time and the blood would have drained down, have caused the numb feeling? I really want to believe it works. But, my mind can't help but try and work it out.
That's a good question, but that's not how the blood system works. The blood is pumped at high pressure around the body- that's how it gets to your head. The arm here is still getting plenty of blood flow due to the pressure in the blood system. You could also test your theory if you want to? If you hold your hand up for a few minutes see if it goes numb enough to not feel the sharpness of a pin? The technique actually works due to changes in neurological processing that can be achieved using the skilled application of state change techniques. I hope that helps
