Changes

'''QC0''', or '''Quad core 0''', is a schedule containing four short core sleeps<ref name="gn" />. So far, it is the only tried-and-successful schedule in the experimental Quad core schedule line.

'''QC0''', or '''Quad core 0''', is a schedule containing four short core sleeps<ref name="gn" />. So far, it is the only tried-and-successful schedule in the experimental Quad core schedule line.

==Origin ==

==Origin ==

The schedule was briefly mentioned in the [[Ubersleep]] book by Puredoxyk under the name “Alternate Segmented” variant. However, there was no adaptation success reported until 2020. Little scheduling details were mentioned in the book. There have been sporadic attempts over the years, but with limited success.

The schedule was briefly mentioned in the [[Ubersleep]] book by [[Puredoxyk]] as an “Alternate Segmented” variant<ref name="ubersleep"/>. However, there was no adaptation success reported until 2020. Little scheduling details were mentioned in the book. There have been sporadic attempts over the years, but with limited success.

==Mechanism==

==Mechanism==

As adaptation progresses, difficult wakes may occur, especially in the nighttime core sleeps around the SWS peak, but also in the morning around REM peak. Theoretically, the adaptation first starts with SWS getting into all core sleeps, and [[wikipedia:Rapid_eye_movement_sleep|REM]] deprivation ensues. As REM pressure builds up, both SWS and REM will be repartitioned into each core sleep, and finally an equilibrium is reached when waking up from all core sleeps is refreshing and energy level throughout the day becomes stable. A core near or at sunrise hours will contain predominantly REM, while a core around SWS peak hours will heavily favor SWS. As such, QC0 also possesses the characteristics of [[Dual core|Dual Core sleep]], and may be easier for those who are naturally [[Segmented]] sleepers.

As adaptation progresses, difficult wakes may occur, especially in the nighttime core sleeps around the SWS peak, but also in the morning around REM peak. Theoretically, the adaptation first starts with SWS getting into all core sleeps, and [[wikipedia:Rapid_eye_movement_sleep|REM]] deprivation ensues. As REM pressure builds up, both SWS and REM will be repartitioned into each core sleep, and finally an equilibrium is reached when waking up from all core sleeps is refreshing and energy level throughout the day becomes stable. A core near or at sunrise hours will contain predominantly REM, while a core around SWS peak hours will heavily favor SWS. As such, QC0 also possesses the characteristics of [[Dual core|Dual Core sleep]], and may be easier for those who are naturally [[Segmented]] sleepers.

After adapting to QC0, one can proceed to transition to [[CAMAYL]], which is a highly flexible schedule with the ability to sleep in short cores around the day.

After adapting to QC0, one can proceed to transition to [[Camayl]], which is a highly flexible schedule with the ability to sleep in short cores around the day.

==Difficulty==

==Difficulty==