Changes

== Variants ==

== Variants ==

Because E2 has a reasonable amount of total sleep (similar to the likes of [[DC1]]) and only 3 sleeps to be scheduled each day, most of which goes to the [[Cores|core]], E2 has a wide array of scheduling options. Over the years, there have been at least a couple, if not more than a few, to a lot of the listed variants below. This opens up for a lot of options to fit E2 into different lifestyles.  

Because E2 has substantially more sleep than the minimum threshold for most people, it allows a range of scheduling options. Over the years, there have been several successful adaptations to the variants below.

=== 5h core ===

=== 5h core ===

[[File:5h core.png|center|thumb|E2 with 5h core]]

[[File:5h core.png|center|thumb|E2 with 5h core]]

This uncommon variant is still called E2 (not extended), as it is a minor change. According to about 8 EEG reports compiled by a Polyphasic Sleep Society contributor, the period from '''4.5-5hrs''' in a single sleep appears to consist of REM. We call this a '''statistically likely REM period'''. It is important to note that this may vary across individuals and this assertion is currently under review, due to the addition of over a dozen more polyphasic sleepers sharing their EEGs with the leading active community on Discord.

This variant is still called E2 (not extended), as it is a minor extension. The reasoning behind this is that, as most of the SWS should have been accounted for by the 4.5h mark, adding sleep after it should allow more REM and light sleep to be gained, potentially easing the adaptation.

Recently, there have been a bit more successful adaptations to this variant. People who would need this variant are those who want to have a more comfortable time '''flexing the core sleep after adapting''', have a somewhat high REM requirements (e.g, ~120m) or prefer to get in just a bit more sleep to not reduce sleep too much. Alternatively, this variant also reinforces a somewhat more physically active lifestyle without too much of a downside of the addition of 30m sleep. Polyphasic beginners or those who are at the final years of growing (~18-19) can also attempt this variant. However, during the adaptation, it may be '''more difficult to wake up from a 5h core''' than from a 4.5h core (initially), before this core duration is fully ingrained. The 5h core can also push the wake gap until the first nap a bit longer than the 4.5h core would (up to ~6-7h wake gap at most). This core duration also tolerates a bit more hiccups from time to time (e.g, insufficient time to cool down to sleep, or some forced delay of start time).

The potential benefits this variant compared to the standard one might include:

* extra [[flexing|flexibility]] after adaptation

* account for increased REM requirements (~120m)

* accommodate more physical activity

* more buffer sleep for younger (~18-19)individuals who might still be growing

Finally, one sleeper has proven that a 5h core E2 can enable a '''[[SEVAMAYL]]''' adaptation (5h core). The buffer amount from the slightly longer core sleep makes it possible to enhance the flexibility of each nap, and the malleability of the core sleep. Consequently, currently, a 5h core E2 is considered a '''very ideal''' choice to attempt.  

However, during the adaptation, it may be somewhat difficult to wake up from a 5h core, before one gets used to the length. The 5h core may also allow a somewhat longer wake gap after core. As with all other slightly extended variants, this variant is expected to tolerate slightly more disruptions from time to time, including insufficient time to cool down or a slight delay of start time.

 

One sleeper has shown that a 5h core E2 can be a path to [[SEVAMAYL]] adaptation. The buffer amount from the slightly longer core sleep allows more flexibility of both naps and the core itself. For these reasons, 5h core is recommended as an alternative to the default one.  

=== Early core ===

=== Early core ===