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Comment by hlynurd | Hacker News Reader

>the Hadza uniformly reported high satisfaction with their sleep.

And why wouldn't they? This is (presumably) the only kind of sleep they know.

Do you really need to know other kinds of sleep in order to know if you feel like shit after waking up or if you feel fine?

If they have no frame of reference then it seems like their general contentedness is being measured (or as another commenter indicated, their willingness to gripe.)

Yes.

Even in your example, you propose an individual could know multiple kinds of after-sleep feelings.

I believe that how you feel after a night's sleep is mostly due to nutrition (long term, not just the day before).

that might be true unless we can define what nutrition can help with sleep. There's plenty of people who eat well and sleep like crap.

If you're eating "well" but don't feel/sleep well, are you really eating well?

They're probably also less confronted with articles/videos/social media posts telling them they're doing it wrong and how they should sleep instead. Sometimes ignorance (or rather, not overthinking things) is bliss...

Well probably us modern human only know the "8h sleep at night" kind of sleep, yet a lot of people would tell you whether they're satisfied or not with their sleep

I mean I can vary from 9 to 3 hours of sleep a night, and I can tell you I'd rather get 9 than 3. Just because I'm meant to get 8 hours a night doesn't mean I do

Also, they may not want to complain to strangers.

Also, we humans can get used to a lot of things and just be okay with it. For an extreme example, look at domestic abuse victims...

True. But the article mentions that the amplitude of their circadian rhythm is higher (which tells you how much a relevant measure like the amount of melatonin or body temperature varies in a 24 hour cycle), so that is an indication of better sleep. A low amplitude means less difference between sleeping and being awake.

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