I feel like many engineers are better and more productive late at night. Mornings sap the energy from my body. I often need a solid three hours just to "boot up", but at night I absolutely kill it with productivity.
I wish the world revolved more around our schedule.
It's like my entire schedule is shifted by two days.
Same here but in a different way than you describe. I become scatterbrained and jump from task to task never able to focus on anything because my brain is just firing too fast for its own good.
Of course dip too far below 6 hours and I once more can't focus. This time because my brain runs away from any perceived obstacle and opens the nearest distraction (like HN)
In all seriousness though I don't find the interruption that bothersome.
I'm starting to notice that on weekdays I actually perform better with 6 hours of sleep rather than 8 or 9. Then on the weekend I would "sleep in" to make up for the lost sleep time.
For some reason, if I sleep for 8 or 9 hours, I wake up feeling like I don't want to do anything. I don't feel sluggish or anything. I just feel "satisfied". Like there's nothing to be done. I can just "be". I can't bring myself to focus on any specific task. Nothing feels urgent.
When I sleep 6 hours, somehow I can focus more.
This is combined with not consuming caffeine. If I drink coffee after I have slept only for 6 hours, it makes me tired and sluggish.