I sometimes do sleep from 20h-23h, but I always have problems going back to sleep at 3. Lying awake until 6am really isn't helpful if you want to have productive days as well as productive nights.
Same. Taking naps anywhere from 19:00-20:30 all the way to 22:30-00:30 has been amazingly healing experience both for my body and mind but there's no way in hell I fall asleep at 3:00. I feel at my peak then. When I take these naps I can't fall asleep earlier than 7:30-8:00...