[tom_mellior]

> I assume you speak for yourself. Biphasic sleep is not an abnormal occurrence and actually quite embedded in some non-anglo cultures

I think you misunderstood the parent, and your reaction seems a bit confrontational. Surely the parent wasn't suggesting that a good night's sleep plus an afternoon nap "sounds exhausting" and "could have serious health impacts". They were talking about patterns that do not include a good night's sleep.

[alessivs]

Ah, that's an understandable interpretation, but my response was not meant to be unnecessarily confrontational. If anything, the closing sentence was an admission that, while we seem wired to sleep mono or biphasically and maintain good health, a poorly executed second sleep block had the potential to compromise it, and that there were provisions that in my judgment were worth knowing.