Until Thomas Edison came along, our ancestors preferred to have two sleeps per night with a break in between. Converting back to it has been tricky, but worth it
Facts about sleeping you never knew - WTF fun facts
Around a third of the population have trouble sleeping, including difficulties maintaining sleep throughout the night. While nighttime awakenings are distressing for most sufferers, there is some evidence from our recent past that suggests this...
Segmented Sleep. I've slept like this for years and didn't know it was "natural".
I used to be tired all the time too. 'Segmented sleep' solved that | Peter Papathanasiou | Opinion | The Guardian
self-care: every day
Segmented sleep - It’s not insomnia if you stay up voluntarily.
Mind & Body
Split sleep, and the things people do in the middle.
Science and magic