Changes

===Less common core duration combination ===

===Less common core duration combination ===

[[File:DC1 Polysoc 1.png|center|thumb|The original variant proposed by Polyphasic Society]]

[[File:DC1 Polysoc 1.png|thumb|The original variant proposed by Polyphasic Society|alt=]]

In this variant, both core sleeps still give a total of 5h, however, there is a slight difference from the currently used version. This variant was the first one proposed by '''Polyphasic Society'''. The first core sleep is as long as the equivalent first core on Segmented sleep, based on the idea that the extra 30m sleep starting from the 3h mark gives some more REM sleep (even though this most definitely does not apply to every individual). This core length is also applied in E3 a lot of times. However, the sleep peaks that are utilized in DC1 ''possibly give a different effect on cycle lengths'', so a 3.5h core may not yield the same kind of result as a 3.5h core starting out of SWS peak would.  

In this variant, both core sleeps still give a total of 5h, however, there is a slight difference from the currently used version. This variant was the first one proposed by '''Polyphasic Society'''. The first core sleep is as long as the equivalent first core on Segmented sleep, based on the idea that the extra 30m sleep starting from the 3h mark gives some more REM sleep (even though this most definitely does not apply to every individual). This core length is also applied in E3 a lot of times. However, the sleep peaks that are utilized in DC1 ''possibly give a different effect on cycle lengths'', so a 3.5h core may not yield the same kind of result as a 3.5h core starting out of SWS peak would.  

This variant would be a strong evolution step after adapting to Segmented with the first core being 3.5h, because the transition and learning of 3.5h core habits has been formed. This variant has little success throughout the years, because it is reliant on a gradual adaptation from Segmented, which lengthens the adaptation time it takes to adapt to this variant.  

This variant would be a strong evolution step after adapting to Segmented with the first core being 3.5h, because the transition and learning of 3.5h core habits has been formed. This variant has little success throughout the years, because it is reliant on a gradual adaptation from Segmented, which lengthens the adaptation time it takes to adapt to this variant.  

[[File:DC1 Polysoc 2.png|center|thumb|Another variant proposed by Polyphasic Society]]

[[File:DC1 Polysoc 2.png|thumb|Another variant proposed by Polyphasic Society|alt=]]

It is well-established that 2.5h core is very uncommon and difficult to tame, because for an average person it induces mid-cycle (SWS/REM) wakes right at the start of adaptation. This in return increases oversleeping chance, especially in the first core. Waking up from SWS has mostly been the most challenging awakening, while waking up from REM is usually more manageable (even though both can be just as disgusting during Stage 3 adaptation). This variant, however, would suit individuals with lower SWS needs and higher REM sleep, as the morning sleep is lengthened. Some may also prefer a longer morning sleep to be more productive at early morning hours, especially if they have been used to the night hours between the cores. Success rate up to date remains low, because attempting a 2.5h core from the get-go is discouraged except in the case of experienced sleepers or those with EEG tracking and sufficient understanding of their sleep architecture.  

It is well-established that 2.5h core is very uncommon and difficult to tame, because for an average person it induces mid-cycle (SWS/REM) wakes right at the start of adaptation. This in return increases oversleeping chance, especially in the first core. Waking up from SWS has mostly been the most challenging awakening, while waking up from REM is usually more manageable (even though both can be just as disgusting during Stage 3 adaptation). This variant, however, would suit individuals with lower SWS needs and higher REM sleep, as the morning sleep is lengthened. Some may also prefer a longer morning sleep to be more productive at early morning hours, especially if they have been used to the night hours between the cores. Success rate up to date remains low, because attempting a 2.5h core from the get-go is discouraged except in the case of experienced sleepers or those with EEG tracking and sufficient understanding of their sleep architecture.  

On DC1, a lot of sleep compression may occur, which in return can result in '''4 sleep cycles''' (2 from each core), each of which lasts for ~75 minutes. Theoretically this should only occur for individuals with a large amount of sleep reduction from their monophasic baseline. However, this possibility needs more EEG data to confirm, after the adaptation process is completed.  

On DC1, a lot of sleep compression may occur, which in return can result in '''4 sleep cycles''' (2 from each core), each of which lasts for ~75 minutes. Theoretically this should only occur for individuals with a large amount of sleep reduction from their monophasic baseline. However, this possibility needs more EEG data to confirm, after the adaptation process is completed.  

[[File:DC1-mod.png|center|thumb|Slightly longer core durations]]

[[File:DC1-mod.png|thumb|Slightly longer core durations|alt=]]

This variant has seen at least 1 success over time, relying on the buffer extra sleep that lines up with the 90m multiple rule (to ease scheduling) and a longer second core to account for a higher REM need. The higher total sleep also increases the chance for flexing either cores to greater effects. However, it still remains largely unpopular to date. Attempting this variant is not discouraged, but the 2.5h second core is expected to be uncomfortable especially during stage 3.  

This variant has seen at least 1 success over time, relying on the buffer extra sleep that lines up with the 90m multiple rule (to ease scheduling) and a longer second core to account for a higher REM need. The higher total sleep also increases the chance for flexing either cores to greater effects. However, it still remains largely unpopular to date. Attempting this variant is not discouraged, but the 2.5h second core is expected to be uncomfortable especially during stage 3.  

===Slightly shortened core durations ===

===Slightly shortened core durations ===

[[File:DC1 Slightly Shortened.png|center|thumb|DC1 with less sleep than standard]]

[[File:DC1 Slightly Shortened.png|thumb|DC1 with less sleep than standard|alt=]]

There have been a couple attempts at this variant, however, success rate remains humble. The primary reason is the relatively low total sleep, almost looking like Triphasic sleep. Repartitioning of sleep stages will be a lot more intense than on the standard version. The immediate benefit from picking this variant would be a lot of extra wake time it provides, while requiring only 3 sleeps per day, with long wake gap between each sleep for various activities. Beginners should not attempt this variant, and it would be better for individuals with lower sleep requirements (e.g, 7h monophasic, or average 8h monophasic but lower REM requirement). It is also unknown how flexible after adaptation the variant would be, since there are no records of its flexibility, and the successful cases did not continue to maintain the schedule or attempt to make it flexible after a couple months on it.  

There have been a couple attempts at this variant, however, success rate remains humble. The primary reason is the relatively low total sleep, almost looking like Triphasic sleep. Repartitioning of sleep stages will be a lot more intense than on the standard version. The immediate benefit from picking this variant would be a lot of extra wake time it provides, while requiring only 3 sleeps per day, with long wake gap between each sleep for various activities. Beginners should not attempt this variant, and it would be better for individuals with lower sleep requirements (e.g, 7h monophasic, or average 8h monophasic but lower REM requirement). It is also unknown how flexible after adaptation the variant would be, since there are no records of its flexibility, and the successful cases did not continue to maintain the schedule or attempt to make it flexible after a couple months on it.  

===Long morning wake gap===

===Long morning wake gap===

[[File:DC1 Long Morning Gap.png|center|thumb|A DC1 variant with 8h morning wake gap]]

[[File:DC1 Long Morning Gap.png|thumb|A DC1 variant with 8h morning wake gap|alt=]]

The idea was originally posited by Polyphasic Society, where the heavy concentration of both cores at night resembles E1 or some sort of Biphasic schedule. The wake gap between 2 cores decreases to 4h, while there is an 8h wake gap between the second core and the nap. The promised utility from this setup is that it has a better chance to work from morning to afternoon hours without the possibility to have a nap around noon or during work. However, this has been very difficult, and has essentially zero successful adaptation because of the long morning gap. Individuals with lower sleep requirement can take advantage of this variant, because they usually can '''stay awake longer''' with a more distant sleep distribution, than an average person would.

The idea was originally posited by Polyphasic Society, where the heavy concentration of both cores at night resembles E1 or some sort of Biphasic schedule. The wake gap between 2 cores decreases to 4h, while there is an 8h wake gap between the second core and the nap. The promised utility from this setup is that it has a better chance to work from morning to afternoon hours without the possibility to have a nap around noon or during work. However, this has been very difficult, and has essentially zero successful adaptation because of the long morning gap. Individuals with lower sleep requirement can take advantage of this variant, because they usually can '''stay awake longer''' with a more distant sleep distribution, than an average person would.

=== Siesta-alike===

=== Siesta-alike===

[[File:Siesta-alike.png|center|thumb|A DC1 variant with a core-nap flip]]

[[File:Siesta-alike.png|thumb|A DC1 variant with a core-nap flip|alt=]]

It is uncertain what the advantages of this scheduling would be compared to the traditional setup, where the second core is placed at hours that are virtually safe from any real life interruptions. However, some individuals do claim that a short nap around sunrise hours would give more chance for vivid dream recall than a core sleep, probably because of a higher percentage of REM sleep in a nap than in a core, and the period of REM that ends before awakening is likely shorter on a nap than on a core. '''Only one person has reportedly succeeded''' at adapting to this variant. The daytime core looks like that on Siesta, but it is questionable how it can be managed long-term, while a daytime nap is a lot more convenient to schedule.  

It is uncertain what the advantages of this scheduling would be compared to the traditional setup, where the second core is placed at hours that are virtually safe from any real life interruptions. However, some individuals do claim that a short nap around sunrise hours would give more chance for vivid dream recall than a core sleep, probably because of a higher percentage of REM sleep in a nap than in a core, and the period of REM that ends before awakening is likely shorter on a nap than on a core. '''Only one person has reportedly succeeded''' at adapting to this variant. The daytime core looks like that on Siesta, but it is questionable how it can be managed long-term, while a daytime nap is a lot more convenient to schedule.