 need to see a practitioner. There's an interesting thing about this study. How do you do a placebo when the study is about walking? They tell one group to walk and they told another group they didn't tell them to walk, but they also didn't tell them not to walk. They told them to seek what's called usual care. They could do various things. They could go whatever they wanted to do. They could go to a physical therapist. They could go to an acupuncturist.