I think it's possible but probably not sustainable. Nick Winters did a 120-hour programming/game-dev workweek and filmed it so you could see if he was cheating: https://www.youtube.com/watch?v=E0qlr22cF14
I'm also open to the possibility that might be a very small percentage of people who could do it and that I might just not be one of them.
I'm also open to the possibility that I've been conditioned to expect 40 hour work weeks and that's why I may not be able to do much more. Apparently it's common for students in China to attend school for 12 hours a day. Perhaps if I'd been raised in a similar environment it would be easier to focus for longer?
HN discussion at the time: https://news.ycombinator.com/item?id=6760685
I'm also open to the possibility that might be a very small percentage of people who could do it and that I might just not be one of them.
I'm also open to the possibility that I've been conditioned to expect 40 hour work weeks and that's why I may not be able to do much more. Apparently it's common for students in China to attend school for 12 hours a day. Perhaps if I'd been raised in a similar environment it would be easier to focus for longer?