Saturday, December 1, 2012


Did you know that historically humans used to break their sleep up into to different nightly sessions?  

They were called, inventively enough, first sleep and second sleep.  

Ever since the invention of high-luminosity artificial lighting we have been trying to cram our sleep into one uninterrupted block.  

Perhaps I should try this method.  But that would mean not using lights at night so that my pineal gland can adjust any circadian rhythms accordingly.  

Most of you probably don't believe me, but thats the way of things.  

May your day be productive and filled with joy.

1 comment:

Dug said...

Great book that covers that and much more about how our experience of night has changed over time: At Day's Close by Roger Ekirch.

You don't have to reset your circadian rhythms. The first-sleep/second-sleep idea is most useful when you wake up in the middle of the night and realize you don't have to fight your way back to sleep - that it's perfectly natural to spend an hour or so contemplating mysteries, writing sonnets, puttering in the laboratory and/or whatnot.