This is from a study published in April in The Lancet Public Health.<p>Previous studied showed a correlation between physically demanding jobs and a <i>shorter</i> life.<p>What's new here is that the authors were able to crosscheck and control for other factors, such as smoking habits and income.<p>With this information, it turns out that physical exercise is beneficial, even if it comes from a physically demanding job. "Every movement counts, regardless of whether you are active at work or during leisure."