No one actually told me those things. I just put it together because of my experience at the chiropractor. I had an appt. to see a neurologist because the PN was spreading and worsening. In the meantime I was trying a new chiropractor and he did that scraping on my calves. He had a hunch it would help the PN, which it did incredibly. Some has returned but I will ask him to do it again. My PN really does seem to be from those tight muscles, although I have also had some in my elbows from leaning on them too long!? Because of the disappearance of symptoms, I canceled my appt. with the neurologist.