This is from a study published in April in The Lancet Public Health.

Previous studied showed a correlation between physically demanding jobs and a shorter life.

What's new here is that the authors were able to crosscheck and control for other factors, such as smoking habits and income.

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."