And then on the flipside there is Musk, Jobs, Gates and countless others who work(ed) all the time. All I'm saying is I see a lot of emulation-of-success articles posted here...
I feel that this is key. I remember an old post about someone's account about another phd candidate they worked with (my memory may be hazy). He noticed that whenever she made good progress, it didn't matter when during the day; she would take off and stop for the day (a lot of times before 2pm) for happy hour. His hours by contrast were less regular and he would work longer streaks, working much longer hours overall. If I remember correctly she finished her thesis a few months before he did.
> The rest of the time, they were hiking mountains, taking naps, going on walks with friends, or just sitting and thinking. Their creativity and productivity, in other words, were not the result of endless hours of toil. Their towering creative achievements result from modest “working” hours.
As others have noted, while you stop working consciously when you're 'relaxing'; you never really stop working subconsciously.
Adam Grant and others (like Napoleon Hill) have elaborated on it, but I can only find his account
https://www.ted.com/talks/adam_grant_the_surprising_habits_o...