⏰Polyphasic sleep involves sleeping for shorter periods of time throughout the day, rather than one long sleep at night.
💤Cultures that incorporate daytime napping tend to require less overall sleep.
🧠Polyphasic sleepers believe that only the REM phase of sleep is necessary for the brain, while the rest of sleep is restful for the body.
🌙The most extreme polyphasic sleep schedule is the Uberman schedule, which consists of six 20-minute naps spaced evenly throughout the day.
⏳Adapting to a polyphasic sleep schedule can be challenging, with a high failure rate reported by those who have attempted it.