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|data4 = 2 cores, multiple short naps

|data4 = 2 cores, multiple short naps

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=== Mechanism ===

== Mechanism ==

This schedule is a variant of SPAMAYL that includes 2 core sleeps. Evolves well from adaptation to DC1-extended, DC2-(extended) and DC3-extended then flexible versions of these schedules as helpful intermediates. The first core sleep provides more SWS while the second core favors more REM, with the nap(s) providing the remaining REM. A strong reliance on sensing when to best nap to get quality REM nap(s) and quality cores is required. You will need the freedom to take a nap soon at any time, and/or the ability to plan naps sensibly for each day such that there is no waking gap too long that makes you tired.

This schedule is a variant of SPAMAYL that includes 2 core sleeps. Evolves well from adaptation to DC1-extended, DC2-(extended) and DC3-extended then flexible versions of these schedules as helpful intermediates. The first core sleep provides more SWS while the second core favors more REM, with the nap(s) providing the remaining REM. A strong reliance on sensing when to best nap to get quality REM nap(s) and quality cores is required. You will need the freedom to take a nap soon at any time, and/or the ability to plan naps sensibly for each day such that there is no waking gap too long that makes you tired.

DUCAMAYL evolves well from an extended Dual Core base schedule (or for some, a regular DC2 schedule) to ensure some flexibility of the core sleeps, but Dual Core sleep in essence evolves from Segmented sleep. With both core sleeps taking advantage of SWS and REM peaks, DUCAMAYL utilizes a varying number of daytime naps for each particular day. After adapting to a base Dual Core schedule, the body gets used to the new sleep pattern, which involves 2 core sleeps and a number of naps to be used when sleep times become flexible, and the amount of sleep reduction from the personal monophasic baseline. Slowly shifting the naps and the cores enhance the flexibility of the whole schedule. '''Both core sleeps rake in ideally all needed SWS, and a decent amount of REM sleep'''. The remaining naps only serve to fulfill the remaining REM sleep and provide alertness boost and memory consolidation with NREM2. Because of 2 core sleeps occupying a fair amount of graveyard hours, DUCAMAYL results in overall fewer daytime naps than SEVAMAYL.  

DUCAMAYL evolves well from an extended Dual Core base schedule (or for some, a regular DC2 schedule) to ensure some flexibility of the core sleeps, but Dual Core sleep in essence evolves from Segmented sleep. With both core sleeps taking advantage of SWS and REM peaks, DUCAMAYL utilizes a varying number of daytime naps for each particular day. After adapting to a base Dual Core schedule, the body gets used to the new sleep pattern, which involves 2 core sleeps and a number of naps to be used when sleep times become flexible, and the amount of sleep reduction from the personal monophasic baseline. Slowly shifting the naps and the cores enhance the flexibility of the whole schedule. '''Both core sleeps rake in ideally all needed SWS, and a decent amount of REM sleep'''. The remaining naps only serve to fulfill the remaining REM sleep and provide alertness boost and memory consolidation with NREM2. Because of 2 core sleeps occupying a fair amount of graveyard hours, DUCAMAYL results in overall fewer daytime naps than SEVAMAYL.  

=== Ideal Scheduling ===

== Ideal Scheduling ==

Aim for around at least ~4.5-5h total sleep for both cores combined, with about 1-4 naps of 10-20 minutes in length. Nap spacing should take into account natural periods of tiredness, as well as the morning circadian peak. In the evening 6-7 hour gaps are common, whereas alertness may wane after 3-4 hours awake around night/early morning hours. A longer Pronap of up to 45m might be plausible during early morning hours (6-10am) if all SWS has already been accounted for, which it should be if the base strict schedule has already been adapted to. This would allow larger gaps and/or increased flexibility later in the day. The wake gap between 2 cores can increase or decrease depending on days. Each core might be flexed and/or varied max. 90m in length, as optional variables after adapted to a base schedule. It’s not recommended to add an extra cycle more than once a week, as more frequent lengthening seems to destabilize adaptations to the reduced sleep total.

Aim for around at least ~4.5-5h total sleep for both cores combined, with about 1-4 naps of 10-20 minutes in length. Nap spacing should take into account natural periods of tiredness, as well as the morning circadian peak. In the evening 6-7 hour gaps are common, whereas alertness may wane after 3-4 hours awake around night/early morning hours. A longer Pronap of up to 45m might be plausible during early morning hours (6-10am) if all SWS has already been accounted for, which it should be if the base strict schedule has already been adapted to. This would allow larger gaps and/or increased flexibility later in the day. The wake gap between 2 cores can increase or decrease depending on days. Each core might be flexed and/or varied max. 90m in length, as optional variables after adapted to a base schedule. It’s not recommended to add an extra cycle more than once a week, as more frequent lengthening seems to destabilize adaptations to the reduced sleep total.

=== History ===

== History ==

The name DUCAMAYL stands for “'''Dual Core As Much As You Like'''”, one of the 4 “-AMAYL<nowiki>''</nowiki> polyphasic schedules. Because of the nigh-impossibility to adapt to this schedule cold turkey, many adaptations have failed. In the past, there have been a few attempts at flexing sleep from the start, but all of them eventually failed. Adaptations to a strict Dual Core base schedule first, however, have proven to be a successful way to adapt to DUCAMAYL.  

The name DUCAMAYL stands for “'''Dual Core As Much As You Like'''”, one of the 4 “-AMAYL<nowiki>''</nowiki> polyphasic schedules. Because of the nigh-impossibility to adapt to this schedule cold turkey, many adaptations have failed. In the past, there have been a few attempts at flexing sleep from the start, but all of them eventually failed. Adaptations to a strict Dual Core base schedule first, however, have proven to be a successful way to adapt to DUCAMAYL.  

Historically, the schedule recorded one unintentional and anecdotal success from sleeper '''Aethermind’s father''', who has been inadvertently maintaining the schedule for most of '''2-3 decades''' without visibly dangerous diseases aside from high stress or missing the second core due to work. His DUCAMAYL variant consists of 2 somewhat flexible core sleeps and alternates between 1 and 2 flexible naps from day to day. First created and roughly drafted in 2017 in the Discord channel, it was proposed as a flexible Dual Core counterpart to SEVAMAYL, a flexible Everyman prototype. Up to 2020, there have been two more successful adaptations to DUCAMAYL. '''<u>Most of what is said about SEVAMAYL also applies to DUCAMAYL</u>''', with only some differences from the structure of DUCAMAYL as a Dual Core schedule, regarding sleep timing and flexibility of sleep. 1-2 months will have to be reserved to adapt to a strict Dual Core schedule first, and then several weeks (~6-9 weeks) to adapt to DUCAMAYL.  

Historically, the schedule recorded one unintentional and anecdotal success from sleeper '''Aethermind’s father''', who has been inadvertently maintaining the schedule for most of '''2-3 decades''' without visibly dangerous diseases aside from high stress or missing the second core due to work. His DUCAMAYL variant consists of 2 somewhat flexible core sleeps and alternates between 1 and 2 flexible naps from day to day. First created and roughly drafted in 2017 in the Discord channel, it was proposed as a flexible Dual Core counterpart to SEVAMAYL, a flexible Everyman prototype. Up to 2020, there have been two more successful adaptations to DUCAMAYL. '''<u>Most of what is said about SEVAMAYL also applies to DUCAMAYL</u>''', with only some differences from the structure of DUCAMAYL as a Dual Core schedule, regarding sleep timing and flexibility of sleep. 1-2 months will have to be reserved to adapt to a strict Dual Core schedule first, and then several weeks (~6-9 weeks) to adapt to DUCAMAYL.  

=== Lifestyle Considerations ===

== Lifestyle Considerations ==

Like other “-AMAYL” polyphasic schedules, erratic lifestyles greatly benefit them. It would be, however, a better idea to slightly flex the Dual Core base schedule rather than adopting DUCAMAYL if flexibility is limited with consistent work or social commitments. Unlike, SEVAMAYL, however, DUCAMAYL has the second core sleep around dawn that can boost alertness for several hours ahead. This can pave the way for certain jobs with long wake gap(s) from morning to early afternoon hours without having to rest. The second core of DUCAMAYL (on variants with at least ~5h total sleep of both cores) limits the amount of needed daytime naps, and needing only 1 daytime nap on certain days can allow for a lot of uninterrupted waking hours.  

Like other “-AMAYL” polyphasic schedules, erratic lifestyles greatly benefit them. It would be, however, a better idea to slightly flex the Dual Core base schedule rather than adopting DUCAMAYL if flexibility is limited with consistent work or social commitments. Unlike, SEVAMAYL, however, DUCAMAYL has the second core sleep around dawn that can boost alertness for several hours ahead. This can pave the way for certain jobs with long wake gap(s) from morning to early afternoon hours without having to rest. The second core of DUCAMAYL (on variants with at least ~5h total sleep of both cores) limits the amount of needed daytime naps, and needing only 1 daytime nap on certain days can allow for a lot of uninterrupted waking hours.  

=== What does it feel like once adapted? ===

== What does it feel like once adapted? ==

Like other “-AMAYL” schedules (except SPAMAYL), once adapted it is possible to '''occasionally extend either core sleep by 90m''' in the event of slight sickness, somewhat more tiredness, stress or heavy gym workouts. This extension should not be done more than once per 7 or 10 days. Nap durations can also become a lot more versatile on some occasions, being able to be extended to '''30m-40m''' (for early/late morning naps) in experienced sleepers or reduced to '''5-10m''' in the case of emergency that does not allow for the usual 20m, or when it gets late in the day (after ~5:30 PM) to avoid more grogginess upon waking.  

Like other “-AMAYL” schedules (except SPAMAYL), once adapted it is possible to '''occasionally extend either core sleep by 90m''' in the event of slight sickness, somewhat more tiredness, stress or heavy gym workouts. This extension should not be done more than once per 7 or 10 days. Nap durations can also become a lot more versatile on some occasions, being able to be extended to '''30m-40m''' (for early/late morning naps) in experienced sleepers or reduced to '''5-10m''' in the case of emergency that does not allow for the usual 20m, or when it gets late in the day (after ~5:30 PM) to avoid more grogginess upon waking.  

Both core sleeps and the naps will sustain alertness, retain memory, cognitive and ideally physical performance everyday. The ability to gain natural wakes from certain naps or cores is also very satisfying.  

Both core sleeps and the naps will sustain alertness, retain memory, cognitive and ideally physical performance everyday. The ability to gain natural wakes from certain naps or cores is also very satisfying.  

=== Variants ===

== Variants ==

To ensure flexibility of both core sleeps and the naps, the total sleep of both cores combined should be '''at least 4.5h''' (e.g, 3h first core and 1.5h second core) and approximately '''~5.5h total sleep''' (all sleeps on schedule). This ideally would cover all SWS and a strong amount of REM sleep and the total sleep of both cores, 4.5h, is comparable with the E3-extended base from SEVAMAYL. However, up to date it is unknown how flexible either core sleep will be with this total sleep, and if one core sleep always has to be stationary. For polyphasic beginners, sleepers with higher sleep needs  or those often naturally waking up at night who want a transition to DUCAMAYL, '''extended base Dual Core versions''' provide much better opportunities to comfortably flex both core sleeps to some extent. This makes DC1-extended, DC2-extended and DC3-extended good candidates for transitioning to DUCAMAYL.  

To ensure flexibility of both core sleeps and the naps, the total sleep of both cores combined should be '''at least 4.5h''' (e.g, 3h first core and 1.5h second core) and approximately '''~5.5h total sleep''' (all sleeps on schedule). This ideally would cover all SWS and a strong amount of REM sleep and the total sleep of both cores, 4.5h, is comparable with the E3-extended base from SEVAMAYL. However, up to date it is unknown how flexible either core sleep will be with this total sleep, and if one core sleep always has to be stationary. For polyphasic beginners, sleepers with higher sleep needs  or those often naturally waking up at night who want a transition to DUCAMAYL, '''extended base Dual Core versions''' provide much better opportunities to comfortably flex both core sleeps to some extent. This makes DC1-extended, DC2-extended and DC3-extended good candidates for transitioning to DUCAMAYL.  

[[File:DC1-ext Base.png|left|thumb|DC1-extended]]

[[File:DC1-ext Base.png|left|thumb|DC1-extended]]

Unlike a regular Dual Core schedule whose first core usually starts early (e.g, 9-10 PM), on DUCAMAYL the first core can become quite flexible and start at later evening hours on some days (e.g, 11 PM-midnight) as part of the flexible regime. This allows more social evening time if any need arises. '''Extended variants''' can also start the first core at late evening hours (~11 PM-midnight) from the very first adaptation step to strict sleep times. The second core, a big perk of DUCAMAYL, can be flexed accordingly and is generally safe from real life interruptions as it is very late into the night. As a result of flexible core sleeps, the '''wake gap between each core''' can increase (moving both cores further or delay the second core) or decrease (moving both cores closer or one core closer to the other) freely. This allows for flexible planning or activities during the wake gap depending on days. For example, a busy night with binge-watching entertainments or work can prompt the sleeper to enjoy more of these night hours, while a night with not many useful activities to do is a cue for a shorter night gap.  

Unlike a regular Dual Core schedule whose first core usually starts early (e.g, 9-10 PM), on DUCAMAYL the first core can become quite flexible and start at later evening hours on some days (e.g, 11 PM-midnight) as part of the flexible regime. This allows more social evening time if any need arises. '''Extended variants''' can also start the first core at late evening hours (~11 PM-midnight) from the very first adaptation step to strict sleep times. The second core, a big perk of DUCAMAYL, can be flexed accordingly and is generally safe from real life interruptions as it is very late into the night. As a result of flexible core sleeps, the '''wake gap between each core''' can increase (moving both cores further or delay the second core) or decrease (moving both cores closer or one core closer to the other) freely. This allows for flexible planning or activities during the wake gap depending on days. For example, a busy night with binge-watching entertainments or work can prompt the sleeper to enjoy more of these night hours, while a night with not many useful activities to do is a cue for a shorter night gap.  

=== Adaptation ===

== Adaptation ==

'''The process of adapting to DUCAMAYL is very similar to SEVAMAYL''' - one or two naps at time can be flexed with small range (e.g, 15m earlier/later than original time), and one of the 2 cores also starts with the same small flex range. Once energy level and alertness stabilize, flexing can increase in larger jumps, one step at a time. Taking flexing of both cores and all naps to the extreme right away can cause more detriment to the schedule, eventually destabilizing it, however. One or both cores of DUCAMAYL may remain stationary throughout the entire flexing adaptation, and the focus is on  highly flexible and alternate number of naps from day to day instead.  

'''The process of adapting to DUCAMAYL is very similar to SEVAMAYL''' - one or two naps at time can be flexed with small range (e.g, 15m earlier/later than original time), and one of the 2 cores also starts with the same small flex range. Once energy level and alertness stabilize, flexing can increase in larger jumps, one step at a time. Taking flexing of both cores and all naps to the extreme right away can cause more detriment to the schedule, eventually destabilizing it, however. One or both cores of DUCAMAYL may remain stationary throughout the entire flexing adaptation, and the focus is on  highly flexible and alternate number of naps from day to day instead.