True, but the same applies to physical jobs. And you'd think that you "exercise" at work, but no, using the same muscles over and over again for 8-12 hours a d

True, but the same applies to physical jobs. And you'd think that you "exercise" at work, but no, using the same muscles over and over again for 8-12 hours a day seems to have different effects than exercising properly for 1-2 hours a day. Exercising in the morning and then going to the job made me feel much better, but after a while I was too tired to wake up. After a day of mental work, biking, stretching and basic exercises (no weights or anything) is "low effort", sort of, because it's the brain that's tired but the muscles are fine. It's hard to start, but I feel refreshed after ~30 minutes. But yeah, 50-60 hours a week is just bad, no matter what job it is.