Coding all night is the most pervasive example. I wake up before 6 AM every day so I'm physically tired by 9 PM. Usually I'm mentally tired well before dinner. Maybe "all night" is a euphemism for "a long time" and I'm over thinking it but I consider it a productive day when I get 3 hours of work on a side project done in addition to my day job.
That being said, I have no problem going home and spending time with my family and not doing anything on my phone, computer, or even Xbox, so maybe it's just me.
EDIT: I don't want to be that guy, but isn't it a fairly commonplace meme among programmers to argue against 8-10-12 hour coding sprints for their employers because you can really "only" get 4-6 hours of good programming time out of someone in a day?[0]
[0] Citation needed