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However, unlike most standard scheduling where a core sleep would make use of a multiple of the 90m sleep cycle, the standard reducing Siesta (6.5h total) utilizes a 5h core, because last 30  is likely to contain extra REM sleep. Based on the typical human sleep structure, it is expected that SWS would be almost, if not fully covered in the first 3 full cycles of sleep (4.5h). On [[Special:MyLanguage/monophasic|monophasic]] sleep, the REM cycles are often longer than 90m, so the 30m may also help with waking up after completed sleep cycles.

However, unlike most standard scheduling where a core sleep would make use of a multiple of the 90m sleep cycle, the standard reducing Siesta (6.5h total) utilizes a 5h core, because last 30  is likely to contain extra [https://en.wikipedia.org/wiki/Rapid_eye_movement_sleep REM] sleep. Based on the typical human sleep structure, it is expected that [https://en.wikipedia.org/wiki/Slow-wave_sleep SWS] would be almost, if not fully covered in the first 3 full cycles of sleep (4.5h). On [[Special:MyLanguage/monophasic|monophasic]] sleep, the REM cycles are often longer than 90m, so the 30m may also help with waking up after completed sleep cycles.

== Adaptation== <!--T:7-->

== Adaptation== <!--T:7-->