How does hours per week top out at 37? 37? Thirty seven? Three-Seven? I can't really figure out how the average is that low except as an assumption that almost no one who works puts in overtime.
Now I feel like a chump for putting in so much overtime.
I don't see how it's very productive to work more than that, particularly in a creative discipline. Actually, I think I'm at my most effective when I "work" less than that - but I also spend idle time thinking things over in the background. That thinking builds up a head of steam for the next period of work, but after six or so hours of that at most, I'd have to be doing some kind of mindless grunt work to continue being effective.
Now I feel like a chump for putting in so much overtime.