Even if you never do it yourself, knowing how it works can bring you better health and increased personal power. Because firewalking demonstrates how your thoughts impact everything else in your life.
Thoughts change brain chemistry, and that results in an alteration of body chemistry as well.
This is immediately apparent when you entertain a sexual fantasy. Firewalkers are instructed to pay close attention to their thoughts, since those very thoughts are the way in which we create our own realities. Positive thinkers literally live in a different chemical environment than negative thinkers. They impose less stress on their immune systems, and the result of that should be obvious. I have been researching firewalking since 1977 and am considered to be the foremost authority on the subject.