The health and retirement correlation

The New York Times has a story about a recent study finding that "people who are good at planning their financial future are more likely to take steps to improve their physical health — and then actually become healthier."

I don't find this surprising at all. It seems like replication in another form of the "Stanford marshmallow experiment," where 4-year-old kids were offered a cookie, or donut, or marshmallow, but if they were willing to wait, they would get two of the treats. The kids who waited were later found generally to have better test scores, grades, etc.