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A highly [[Flexing|flexible]] [[Template:Polyphasic Sleep Schedules|schedule]], which evolves from the [[Everyman]] schedules, usually the extended variants (mostly [[E3|E3-extended]]). It includes a possibility to take a [[Naps|nap]] whenever tired throughout the day, the varying number of naps, and the occasional change in nap/core duration from day to day.<ref name="polynet" />{{TNT|SEVAMAYL}}

{{TNT|SEVAMAYL}} '''SEVAMAYL''' is a highly [[Flexing|flexible]] [[Template:Polyphasic Sleep Schedules|schedule]] derived from [[Everyman]] schedules. It usually evolves from extended variants, such as [[E3#Extended|E3-extended]]. Unlike with flexed versions of normal schedules, SEVAMAYL allows taking [[Naps|naps]] whenever tired throughout the day, with a varying number of naps and occasional changes in core duration throughout .<ref name="polynet" />

== Mechanism ==

== Mechanism ==

After a rigid Everyman-schedule has been adapted to, the brain has replaced its standard sleeping schedule and adjusted to a reduced sleep total. It is then possible to slowly shift the new schedule, containing [[SOREM]] naps and highly repartitioned cores, without reducing sleep quality, as opposed to flexing during the adaptation. Because the naps are being moved they will most likely contain a lower amount of [[wikipedia:Rapid_eye_movement_sleep|REM]] than the naps of the strict schedule, which may require an extra nap to give the same total REM sleep. Still, because a significant part of the REM need is taken care of during the core, the main purpose of the naps is to alleviate [[Sleep pressure|homeostatic pressure]]. It is also possible to utilize [[Pronap|Pronaps]] to more efficiently fulfill the REM need, which results in needing fewer naps later in the day.

After adapting to a rigid Everyman schedule, the brain slowly becomes accustomed to a lower sleep total and a napping habit. It then becomes possible to start [[flexing]] the naps, with a only a minor decrease in quality.  

As is the case with other schedules, quality naps give a large boost to alertness around the clock.

Still, as much of the REM is accounted for by the core on schedules like E3-extended, the main purpose of the naps is to alleviate [[Sleep pressure]] and boost alertness. It is also possible to use [[pronaps]] to fulfill the REM need, reducing the need for naps later in the day.

== Scheduling ==

== Scheduling ==

Schedule a 4-5 hour [[Cores|core]], with about 2-6 naps of 10-20 minutes in length. Cycles may naturally compress to 80m with frequent sleeps. Plan for 90m cycles until there are many early natural wakes. 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 in the morning. A longer pronap of up to 45m might be plausible during the REM peak (6-9am) if all [[wikipedia:Slow-wave_sleep|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 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.

A typical SEVAMAYL schedule contains a [[core]] 4-5 hours long, along with 2-6 naps of 10-20 minutes. Cycles may naturally compress to 80m with frequent sleeps. Plan for 90m cycles until there are many early natural wakes. 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 in the morning. A longer pronap of up to 45m might be plausible during the REM peak (6-9am) if all [[wikipedia:Slow-wave_sleep|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 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.

== Adaptation ==

== Adaptation ==

Up to this point in time, there have been no successful [[cold turkey]] adaptations to SEVAMAYL. There have certainly been attempts, however all of them have failed. It is believed that this is the case because the sleep pressure generated from shortening the total sleep time is not great enough to force the naps to repartition, as is the case with most schedules. [https://www.polyphasic.net/schedules/spamayl/ SPAMAYL] on the other hand has no core to partially take care of the sleep pressure, leading to the naps forcefully becoming entrained. Because of this it is necessary to start a SEVAMAYL-adaptation only after successfully adapting to a rigid schedule first, through [[gradual adaptation]].   

Up to this point in time, there have been no successful [[cold turkey]] adaptations to SEVAMAYL. There have certainly been attempts, however all of them have failed. It is believed that this is the case because the sleep pressure generated from shortening the total sleep time is not great enough to force the naps to repartition, as is the case with most schedules. [https://www.polyphasic.net/schedules/spamayl/ SPAMAYL] on the other hand has no core to partially take care of the sleep pressure, leading to the naps forcefully becoming entrained. Because of this it is necessary to start a SEVAMAYL-adaptation only after successfully adapting to a rigid schedule first, through [[gradual adaptation]].