Good point. The value in this one is the large size of the data set, but mental illness is hardly a uniform phenomenon, so if you fit the "mental illness" categ

Good point. The value in this one is the large size of the data set, but mental illness is hardly a uniform phenomenon, so if you fit the "mental illness" category it doesn't say much about how many people in their data set really overlap with you. And it can make a difference. High intensity exercise still can help many people with depression, but is often counterproductive for anxiety, where low-moderate intensity can be helpful.