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user-inactivated · 3430 days ago · link · · parent · post: BBC - Future - The people who need very little sleep
I'd be careful with polyphasic sleep, my friends that have tried it said that they quickly lost any sense of time, and it's incredibly hard to interact with everyone else (because of the varying sleep cycle). There's also the downside that you have less flexibility than a standard sleep cycle. Miss one nap and it will knock you out for days.