A report by Inverse linked this medieval sleep pattern to what we now refer to as "polyphasic sleep." medieval sleep cycle, segmented sleep benefits, biphasic sleep, Roger Ekirch sleep history, polyphasic sleep famous people, insomnia natural cures, sleep inertia YouTubeWhat is it? "Polyphasic sleep" or "segmented sleep" is the practice of sleeping in multiple smaller segments during the day as opposed to sleeping once in a solid block. medieval sleep cycle, segmented sleep benefits, biphasic sleep, Roger Ekirch sleep history, polyphasic sleep famous people, insomnia natural cures, sleep inertia YouTubeThe Pros and ConsOne of the greatest advantages of polyphasic sleep is that it enables the person to directly plunge into deep sleep. medieval sleep cycle, segmented sleep benefits, biphasic sleep, Roger Ekirch sleep history, polyphasic sleep famous people, insomnia natural cures, sleep inertia YouTubeThis article originally appeared last year.