 The majority of physicians have no clue about tracking and keeping track of the body. And I can't tell you how many times, Dr. Duane, I've shared with the physician I'm seeing about how I'm using this, and they're fascinated. I'm sitting here recommending books for them to check out, and they're intrigued. It's a different version of medicine and science that they don't know, that they don't have an expertise in, and either they're open to it and they find it great, or maybe they're closed off because...