[uint8_t]

See also these internet-historical gems from everything2:

Uberman's sleep schedule - every 4 hours, sleep 20 minutes.

https://everything2.com/title/Uberman%2527s+Sleep+Schedule

Everyman sleep schedule - per above, with an additional 3-hour nap each 24 hours.

https://everything2.com/title/Everyman+Sleep+Schedule

Of course, the surest way to experiment with an alternative sleep schedule is to simply take care of a newborn, something humans have gotten pretty good at over the millennia.

[collinmcnulty]

Yep, I remember reading about these as a youth and thinking, wow what a random bit of biology. Then I had a kid and was like, oh, I see why this is in there.