Upon further review, New York gets a tenth of an inch more rain than Houston. I would have never guessed that.
Until they weren't rich anymore. However, when that happened, they couldn't go back to the fishing and agriculture-based diet and lifestyle, making their health an awful mess.
TL;DR: Take the "couch potato" stereotype so much applied to Americans, put it in a Pacific island and add turbo: You have nowadays Nauruans.