I think that&#x27;s wildly speculative. A physically draining job should keep one somewhat fit and healthy, after all. That&#x27;s to say nothing of the fact that the poorest people I&#x27;ve seen in the U.S. <i>don&#x27;t even have jobs</i>. Their children too, are obese - which really suggests that it&#x27;s more of a culture issue.