Even if I am in the 29% (which is less likely, statistically speaking) along with my friend who also did the training and couldn't do this voluntarily, that's o

Even if I am in the 29% (which is less likely, statistically speaking) along with my friend who also did the training and couldn't do this voluntarily, that's only one part of my argument. I'd still like to see the source for that data. It would contradict research that I've read. And voluntary movement still won't address onset, offset, and intensity of muscle contractions. In addition, voluntary facial movements will often be unilateral (one-sided) or asymmetric in some facet (stronger on one side than another) as well, among other concerns.