Translations:Non-reducing/12/en
From Polyphasic Sleep Wiki
The difference between Segmented-extended and non-reducing Segmented is that the former has a fixed duration and can reduce some sleep for long sleepers, whereas the latter aims not to reduce any sleep (e.g, 4.5-4.5h cores for a 9-hour sleeper). The non-reducing variant is believed to resemble the historical sleep pattern in pre-industrial Europe. Both variants, however, occupy much of the evening and the morning, which can clash with social commitments.