I did it for six months straight around 7-8 years ago, and then on and off as required since.

I was fine with it when I was enjoying work and my work had variety in it - I could do my regular day with a bit of OT in the office, then go build stuff with my hands for a few hours in the shop.

At another job after that, 60s were more difficult because it was work from home, but I still did them as required because I could set my own schedule for the OT and half the time I was drinking and gaming simultaneously (some of the tasks required me to do something and wait on the computer to do compute). But still, the variety of work was key - I had to be able to change tasks and spend at least 10 hours on something that was interesting and different.

A 60 hour work week is stupid, imo. It takes up far too much of your personal time. Like anything, you can do it for a period of time, but it isn’t sustainable as it starts to eat into other aspects of your life.

It’s taken me nearly a year to transition away from a 50 hour standard week and constantly feeling like I should be working more. I had to learn how to just sit at home and do nothing, like drinking a coffee watching dawn come for ten minutes uninterrupted.

idk just sharing my experience. summary is that it’s possible short term if you enjoy it, but you need specific circumstances to be met. I was lucky my job gave me autonomy and flexibility, it wouldn’t have worked otherwise. and obviously I got paid overtime, I’m not working for free. and at both jobs I felt like I was appropriately compensated. I quit the first job when they stopped compensating me appropriately. I toned down the extra work at the second in the same situation.