I just took a single 29-hour workday, right before a major deadline. And coming up to that, didn't have a single off day whole December, typically working from

I just took a single 29-hour workday, right before a major deadline. And coming up to that, didn't have a single off day whole December, typically working from 2pm to 4am. So yeah, it's definitely possible, but really not good for anyone in the long run.