I liked it better when I wake up in the middle of the night. At some point, my child could sleep until 5 or 6am, which is a more difficult time for me to return sleeping.
https://www.sciencealert.com/humans-used-to-sleep-in-two-shi... https://www.discovermagazine.com/health/dont-worry-if-you-ca...
However, I did find this article from The Atlantic: https://archive.is/MYcgm#selection-1033.0-1049.105
>But humans have never had a universal method of slumber. A 2015 study of hunter-gatherer societies in Tanzania, Namibia, and Bolivia found that most foragers enjoyed one long sleep. Two years later, another study found that a rural society in Madagascar practiced segmented sleep. Two years after that, a study found that the indigenous residents of Tanna, in the South Pacific, largely had one uninterrupted sleep.
i remember reading quotes from historical people who were all pretty clear that this is how they slept, and often implied they considered it not to be unusual.
i think it gets too strong when people claim that this is "natural" or "better" or something. but the historical evidence suggests it's at least "okay", and if you sometimes wake up at 3am maybe just embrace this, get up, do something tedious, and go back to bed.