The problem is that repetitive work is inherently injurious. Also, working under high pressure is very likely to lead to mistakes that cause injury. I did hard

The problem is that repetitive work is inherently injurious. Also, working under high pressure is very likely to lead to mistakes that cause injury. I did hard physical labor for eight years and felt great (it's honestly the best I've ever felt physically and I miss it), but I did not do repetitive work or work under extreme pressure. We were always strongly encouraged to take tons of water breaks, not rush, switch tasks several times a day, and stop working immediately if something started hurting or didn't feel right. If people are regularly wearing themselves out on physical labor, it's the fault of management.