Why is physically exerting yourself to the point of exhaustion at the gym good for you but various jobs involving manual labor seem to cause permanent damage in the long term?

Question

Why is physically exerting yourself to the point of exhaustion at the gym good for you but various jobs involving manual labor seem to cause permanent damage in the long term?

In: Biology

Answer 1

If you do gym exercises wrong, you can easily cause permanent damage in the long term. The advantage of going to the gym should be that you get to pick, choose and regulate what exercices you do, and how often, to avoid wrecking yourself. Manual labor jobs rarely give you that kind of option.