Bear in mind that chronotypes, as stated in the wiki, only varies about 2-3 hours from each other. This is just to say that there is no nocturnal person in terms of biology, we are all diurnal mammals after all.
Yeah, like anything, proponents like the guy in the podcast I referenced probably overhype the importance / impact.
Yeah, like anything, proponents like the guy in the podcast I referenced probably overhype the importance / impact.