[timcederman]

You'd think so -- but I was the same when I was a PhD student. I'd get my best work done from 10pm-5am, and a bit during the middle of the day. I'd take naps in the afternoon and evening whenever I felt like it. I actually felt great and wish I could work like that all the time (having a wife makes it difficult to sustain).

[johnnybgoode]

Yeah, but I wonder if it affects your health in the long term?

[sonofjanoh]

One should sleep whenever he/she's tired.

Anyone who has the luxury to choose what to do with his/her time is extremely successful or at least happy.

And also the quality of sleeping is more important than the quantity. No point sleeping 2 more hours if you feel rested and rejuvenated after only 4-5 hours. And again, lucky is the one who can get to the "office" at 4 AM or 1PM whenever he/she is awake and feel like working...

[swombat]

I think what matters most in that respect is probably whether you get enough sleep, rather than when you get that sleep.

I slept at very normal times, but nowhere near enough, while launching my first start-up on the side of a full time job, and that definitely took its toll.

[johnnybgoode]

True, how much matters a lot more than when. But is sleeping for 8 hours a day at unusual times worse than sleeping 8 hours a day at normal times?

[MaysonL]

After you've done it long enough, there are no unusual times to sleep. Most months I will sleep at least once for each of the 24 hours.