> I have ADHD and left to my own devices I would go to sleep somewhere between 2-4am. At work, I don't function so well before about 2pm some days... and by that point that day is almost over.

Indeed. I've struggled with it since childhood, not only me. The same "symptoms" for lack of a better word are seen with my mother, my aunt and my grandmother. All are night owls, all sleep poorly etc.

For whatever reason, regardless of how much sleep i've had, my brain begins to kick into high gear with a clarity of thought and capacity to dedicate myself to things starting at about 9PM. This remains true REGARDLESS of sleep, how well rested I am, general health, etc. I could have had NO sleep for 24 hours, still be away at 9PM the next night, and it's like a switch.

The ONLY time this ever differs, for reasons still unknown, and where I fit into "normal society" is for whatever reason, when I visit Russia (which I have not done for some time for obvious reasons.)

When I am in Russia, with no effort at all, I sleep normal hours without issue, and wake up during the day time actually well rested. This ceases once I return to my timezone. This same pattern is not seen when say, I visit the US instead.

If only I could harness this magic...