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{{TNT|TC1}}

{{TNT|TC1}}

'''Tri Core 1''', or '''TC1''', is a schedule with 3 single cycle [[cores]] and 1 [[nap]], as a part of the [[Tri core]] schedule family.<ref name="polynet" />

'''Tri Core 1''', or '''TC1''', is a schedule with 3 single cycle [[Core|cores]] and 1 [[nap]], as a part of the [[Tri core]] schedule family.<ref name="polynet" />

== Origin ==

== Origin ==

TC1 was created in 2017 by [[Polyphasic Sleep Discord|Discord]] user [[LichTerLoh]] with the goal to avoid the inconvenient daytime core on Triphasic.

TC1 was created in 2017 by [[Polyphasic Sleep Discord|Discord]] user [[LichTerLoh]] with the goal to avoid the inconvenient daytime core on [[Triphasic]].

== Mechanism ==

== Mechanism ==

== Lifestyle considerations ==

== Lifestyle considerations ==

The defining distinction between Triphasic and TC1 is that the night gap is a lot more packed on TC1 with the core sleeps. This can create an impression that TC1 divides the day into several small parts with each core giving more and more compressed vital sleep stages. However, because the wake gap at night is shorter on TC1 than on Triphasic, physically lighter and more peaceful activities are preferred on TC1 (e.g, studying, cooking, planning, chores) to assist in falling asleep in the cores. However, for many individuals, it may be very inconvenient to schedule 3 core sleeps at night, when all of them are placed close to one another. Strenuous exercising may also be overbearing for the total sleep of less than 5 hours. It is also very unlikely TC1 will become very flexible after the adaptation, also because of its total sleep. Slightly flexing a core sleep or two, and/or the nap is acceptable, but so far no one has demonstrated how flexible TC1 can be, assuming a normal sleep requirement. TC1 still offers a large amount of sleep reduction (with a difficult adaptation) and can be a fitting choice for those who love Triphasic, or the idea of having 3 core sleeps, but cannot afford any core sleeps during the day.

Compared to Triphasic, it is much easier to schedule TC1, as it does not have the daytime core. However, the shorter gaps may be more limitng in terms of activities. For example, more mentally stimulating activities may not be advisable to avoid difficulties with falling asleep.

 

TC1 is likely to be slightly flexible after adaptation. Slightly flexing any one of the cores and/or the nap may be plausible, but so far no one has demonstrated this. TC1 provides a relatively large sleep reduction, and can be chosen by those who like the idea of having many short cores. However, [[DC1]] and [[DC2]] are more commonly attempted, and are likely easier to adapt to.

== Variants==

== Variants==

It is also possible to extend one TC1's core by an extra 90 m cycle, but so far no one has adapted to this extended variant either, and it is largely outclassed by Triphasic-extended in scheduling convenience and viability.

It is also possible to extend one TC1's core by an extra 90 m cycle, but so far few have attempted and no one has adapted to it. Either [[Triphasic#Extended|Triphasic-ext]] or one of the extended [[Dual core]] schedules would be preferable, as they avoid the short gaps that may make it difficult to fall asleep.

== References ==

== References ==