[scrozart]

Sleeping in more than one long chunk of time is called polyphasic sleeping [0]. It's postulated that sleeping in one go is an industrial age phenomenon.

Anecdotal, but I embraced a mild form of this during college, using "Einstein naps" (brief naps ended just after dozing) for a recharge between my work day and night classes. I experienced nitably improved focus and less evening burnout.

0. https://en.m.wikipedia.org/wiki/Polyphasic_sleep

[blowski]

Many new parents know how invigorating a 10 second nap can be.

[saalweachter]

It's crazy how you go two, three months and then when you get four hours in a row you wake up feeling amazing, newly clear-headed, and knowing you got objectively bad sleep you wonder how messed up you were before.

[codpiece]

Ha! My fondest memories were taking 5 minute naps with my first child.

[ycombinete]

Maybe it’s also a caffeine thing. When I’m off of caffeine I can take multiple daytime naps. They feel great and are very refreshing. When I’m drinking caffeine it’s hard enough just to get to sleep at the end of the day.