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A highly [[Flexing|flexible]] [[Nap only|nap-only]] [[Template:Polyphasic Sleep Schedules|schedule]]<ref name="rasmus" />, the main idea of which is taking a short [[Naps|nap]] whenever tired throughout a day. Usually has a total sleep time close to 3 hours.{{TNT|Spamayl}}

Spamayl is a highly [[flexing|flexible]] [[Nap only|nap-only]] [[schedule]]<ref name="rasmus" />, with its main idea being taking a short [[nap]] whenever tired throughout the day.  

== Origin ==

== Origin ==

Spamayl is an abbreviation of “'''Sleep Polyphasically As Much As You Like'''”, one of the 4 "-AMAYL" polyphasic schedules. Originally proposed by '''Rasmus''', who reportedly stayed on the schedule for 1.5 years, Spamayl is intended to be the first "-AMAYL" polyphasic schedule with hyper flexibility in sleep times, following the body's need for rest to place the naps accordingly. The original design of the schedule exclusively uses 20 m naps. Recently, it is also sometimes referred to as U7 or U8 ([[Uberman]] with 7 or 8 [[naps]]).

Spamayl is an abbreviation of "Sleep polyphasically as much as you like". It is one of the 4 "-amayl" flexible schedules. It was originally proposed by a forum user Rasmus in a 2012 forum [https://web.archive.org/web/20120120020801/http://trypolyphasic.com/forum/topic/154/spamayl-plan-discussion/ post], who reportedly stayed on the schedule for one and a half years. Spamayl is the oldest "-amayl" schedule, which allows taking a varying amount of naps, as opposed to flexible versions of regular schedules. The original design of the schedule exclusively uses 20-minute naps, though variants with longer naps have later been attempted.

The birth of this schedule eventually led to the creations of 3 other "-AMAYL" schedules, while the sleep principles still apply - sleep when tired enough.  

This schedule later inspired 3 other "-AMAYL" schedules, which contain cores to fulfill the required SWS, while still adhering to the principle of sleeping when needed.  

== Mechanism ==

== Mechanism ==

{{TNT|Further|Nap only#Mechanism}}

{{further|Nap only#Mechanism}}

The schedule is based on the entrainment of 20 m naps, napping for 20 m when one is tired enough. Since there are no core sleeps, all necessary [[wikipedia:Slow-wave_sleep|SWS]] and [[wikipedia:Rapid_eye_movement_sleep|REM]] must come from the naps. Like with Uberman and [[Dymaxion]], a SWS nap can be experienced during the REM peak, and REM nap during SWS peak. Sleep pressure is usually huge since SWS and REM have to be repartitioned into all naps, and one cannot predict which sleep type each nap can have, due to the varied number of naps each day. However, Spamayl is '''less hostile''' than Uberman and Dymaxion, since it can allow more than 6 or 4 naps respectively, and the extra sleep from the extra naps will help accommodate sleep need more easily, allowing for extra REM and SWS gain. However, because the naps are being moved they will contain a lower amount of SWS or REM than the naps of strict nap-only schedules, thus requiring more naps to give the same total SWS and REM sleep. It is likely that only adults with genetically reduced sleep needs will be able to accomplish this type of sleeping pattern, due to the inefficiencies of inconsistent sleep times and the very low sleep total. Experienced nappers can also achieve a fast onset of REM or SWS in their nap, with precise timing of sleep.  

The schedule is based on the adaptation to a habit of 20-minute naps. Since there are no core sleeps, all necessary [[SWS]] and [[REM]] must come from the naps. As with [[Uberma]]n and [[Dymaxion]], the intense sleep pressures makes the circadian [[sleep peaks]] less important than on other schedules. Experienced nappers can also achieve a fast onset of REM or SWS in their nap, with precise timing of sleep.  

Spamayl can also have up to ~10 naps to be scheduled per day realistically, which also adds up to a total sleep of 4h, a minimum sleep threshold of average sleepers. If one or more naps are to set for longer than 20m, then ~6-8 naps per day are sufficient to secure the minimum sleep threshold.  

Spamayl can also have up to ~10 naps to be scheduled per day realistically, which also adds up to a total sleep of 4h, a minimum sleep threshold of average sleepers. If one or more naps are to set for longer than 20m, then ~6-8 naps per day are sufficient to secure the minimum sleep threshold.  

== Difficulty==

== Difficulty==

Due to the usually very low TST of 3-4 hours (while an extended version is thinkable, increasing the density and length of the naps would nullify most advantages mentioned below), lack of cores and therefore extreme repartitioning of SWS into naps with resulting SWS wakes and necessity of correctly gauging the timing and duration of the naps, as well as their scheduling, likely completely ignoring of socially acceptable sleep times as a result, the adaptation difficulty of Spamayl is considered '''extremely difficult'''.

Due to the usually very low TST of 3-4 hours (while an extended version is thinkable, increasing the density and length of the naps would nullify most advantages mentioned below), lack of cores and therefore extreme repartitioning of SWS into naps with resulting SWS wakes and necessity of correctly gauging the timing and duration of the naps, as well as their scheduling, likely completely ignoring of socially acceptable sleep times as a result, the adaptation difficulty of Spamayl is considered '''extremely difficult'''.