[joshuaturner]

> that being healthier and richer improve your sleep

Either that or, apparently, living in Nebraska or Minnesota

[jerlam]

It's not a very good article and I don't agree with it.

If it was entirely wealth-based, the map should correlate to this map of counties ranked by personal income, but there are clearly differences:

https://en.wikipedia.org/wiki/List_of_United_States_counties...