> My brain gets tired around 10pm like a normal person, but then it gets a "second wind" and is up happily until 3-4am, with intensely increased clarity of focu

> My brain gets tired around 10pm like a normal person, but then it gets a "second wind" and is up happily until 3-4am, with intensely increased clarity of focus. Not saying this isn't your natural predisposition, but FWIW this is pretty much exactly what happens to everyone with a disrupted sleep schedule. Or any disrupted normal cycle, really[1]. Probably the large majority of people have experienced this. [1]: Fasting is one example- you will be starving by lunch or dinner, but if you wait a few hours longer the hunger will go away pretty much entirely. You may feel sluggish and slow when you're hungry, but once your brain realizes you aren't going to eat you will feel lighter and more energetic. If your body needs to go past its normal cycles, your brain will give you the resources to do so. The hunger and tiredness you feel normally are more like periodic maintenance reminders.