There's a lot of talk about different sleep patterns like this, called "polyphasic sleep". There's even a society for it. There's different types of polyphasi

There's a lot of talk about different sleep patterns like this, called "polyphasic sleep". There's even a society for it. There's different types of polyphasic sleep, ranging from the "siesta" popular in many Latin nations, to the "Dymaxion" which Buckminster Fuller tried to promote which has four equal waking periods throughout the day and only 2 hours of total sleep. (There's also an "Uberman" pattern that's similar, with 6 equal waking periods.) https://en.wikipedia.org/wiki/Polyphasic_sleep https://en.wikipedia.org/wiki/Polyphasic_sleep