| I have a question here. I was exploring lately, getting up earlier, and it always really appealed to me. The idea of getting in sync with the sun, like the natural diurnal cycle. Stricadian rhythm, when the sun goes down approximately that's when you get ready for bed. When the sun comes up, that's maybe when you get ready, that's when you get up. But that would require, in the winter time at least, here, where I live, going to bed as early as, I mean I guess it depends. Whether you'd want to go to bed immediately at sundown, I think that's probably not realistic, and a couple of hours later. But even if you did the latter, you'd be talking about going to bed at like 8 o'clock in the winter, maybe as early as 7. <br><br>Now my question is, my interest in this really comes from a question I've always wondered or thought about, which is that until relatively recently there was no such thing as artificial illumination that you could click on with a switch in your home at least, and even the concept of street lighting being totally reliable and totally every street in a developed city being covered in street lighting, that was also a foreign concept. So in the evolution of humans, it seems to me it must be the case that this is a very recent adaptation. <br><br>So my question is really, from the historical record, what do we know about the kind of sleep cycle that humans gravitate to naturally when there isn't alternative lighting? Artificial lighting. Thanks for watching! |