I’ll intellectually/emotionally/physically hard as answers. For me its either 12 hours straight “punching tubes” on a very large scotch marine firetube boiler at the beginning of my career or Easter around a decade ago when I was working with troubled teens and had to engage in 5 separate protective holds in one 16 hour double shift. The former was all physical and the latter was a combination of emotional and physical.
I used to work at a really shitty metal factory as an engineer. I’d have to help get the lines going again after our weekly shutdown, and it was always a 24-30 hour work day, once per week. So 5 am until 5-10 am the next day. Very little for breaks (though they did feed us), almost never any sleep. That drive home after was harrowing. It probably would have been safer if I was drunk
For all my hard work and dedication I got rewarded with fucking nothing because that’s how capitalism works