Changes

Similar to Segmented sleep, DC1 offers a variety of scheduling options in its arsenal. A lot of variants have been tried and succeeded over time, although the bulk of the success is from the extended versions. Either way, DC1 demonstrates that one can enjoy the night gap between the cores, keep up the Segmented habit, and further cement the schedule with a daytime nap for another chance at rejuvenation. Because of the ability to take advantage of the sleep peaks and the circadian nadir around noon, DC1 (extended) is considered a '''well-rounded''' schedule. The second core sleep is also great for a lot of REM sleep and can sustain alertness well into the afternoon, setting the foundation for very efficient morning productivity. With the option to delay the first core to later evening hours without a lot of compromise, the extended version also spares more room for '''social time''' in the evening as total sleep is high enough to rake in quality SWS with strong dark period management. However, like a typical Dual Core schedule, the first core sleep often starts at earlier hours than Everyman sleep to make use of the '''SWS peak''', so an Everyman schedule (e.g, E2, E3-extended) still has more vantage points in terms of evening social time.  

Similar to Segmented sleep, DC1 offers a variety of scheduling options in its arsenal. A lot of variants have been tried and succeeded over time, although the bulk of the success is from the extended versions. Either way, DC1 demonstrates that one can enjoy the night gap between the cores, keep up the Segmented habit, and further cement the schedule with a daytime nap for another chance at rejuvenation. Because of the ability to take advantage of the sleep peaks and the circadian nadir around noon, DC1 (extended) is considered a '''well-rounded''' schedule. The second core sleep is also great for a lot of REM sleep and can sustain alertness well into the afternoon, setting the foundation for very efficient morning productivity. With the option to delay the first core to later evening hours without a lot of compromise, the extended version also spares more room for '''social time''' in the evening as total sleep is high enough to rake in quality SWS with strong dark period management. However, like a typical Dual Core schedule, the first core sleep often starts at earlier hours than Everyman sleep to make use of the '''SWS peak''', so an Everyman schedule (e.g, E2, E3-extended) still has more vantage points in terms of evening social time.  

Because of the characteristically different features of both core sleeps, it can be beneficial to study before the first core, and then revise the learned materials during the night gap. SWS, which is prevalent in the first core, is responsible for '''storage of declarative/explicit memory''', e.g, recall of explicit factual information. A history, or a biology test, X happened on date Y. A in the body does which thing B. On the other hand, '''REM''' is responsible for '''storage of procedural memory''', i.e. remembering how to do certain things by following a procedure. Examples include how to walk, how to ride a bike, how to play a specific piano piece. In addition, REM is also responsible for emotionally related memory consolidation, and for spatial memory consolidation (together with light sleep), (e.g, which way to walk to a friend's house). If one is trying to remember procedures by <u>repetition</u>, napping is a good way to boost that, and the nap on DC1 can fulfill such purpose. If they are trying to remember chunks of information, they won't get any gain there until the core sleep and it is best to study such materials before the core. Note that this does not only apply to DC1 - Segmented and other schedules with Dual Core features can also benefit from the experiment. The sole nap's function on DC1 also applies to any other schedules that are within the adaptability range and have been proven to be stable long term.  

Because of the characteristically different features of both core sleeps, it can be beneficial to study before the first core, and then revise the learned materials during the night gap. SWS, which is prevalent in the first core, is responsible for '''storage of declarative/explicit memory''', e.g, recall of explicit factual information. A history, or a biology test, X happened on date Y. A in the body does which thing B. On the other hand, '''REM''' is responsible for '''storage of procedural memory''', i.e. remembering how to do certain things by following a procedure. Examples include how to walk, how to ride a bike, how to play a specific piano piece. In addition, REM is also responsible for emotionally related memory consolidation, and for spatial memory consolidation (together with light sleep), (e.g, which way to walk to a friend's house). If one is trying to remember procedures by <u>repetition</u>, napping is a good way to boost that, and the nap on DC1 can fulfill such purpose. If they are trying to remember chunks of information, they won't get any gain there until the core sleep and it is best to study such materials before the core. Note that this does not only apply to DC1 - Segmented and other schedules with Dual Core features can also benefit from the experiment. The sole nap's function on DC1 also applies to the nap(s) any other schedules that are within the adaptability range and have been proven to be stable long term.  

DC1, however, is generally harder than its counterpart E2, which is reflected on the much lower amount of success (barring extended versions), and the borderline with inflexibility after adaptation. So far there are not many adapted DC1 (5.3h sleep) sleepers that can flex the core sleeps by a lot. It would require lower sleep requirements overall, or experienced sleepers to be able to manage a flexible DC1. While it is possible to achieve this, the second core may have to remain '''stationary''', and the first core may not be any more flexible than 1h range (earlier/later than the originally scheduled time). The nap on DC1 may be flexible, but it is uncertain how flexible it can be. Regardless, more data is required to determine how flexible DC1 can be, compared to E2, whose second nap is highly flexible in a lot of adapted people.  

DC1, however, is generally harder than its counterpart E2, which is reflected on the much lower amount of success (barring extended versions), and the borderline with inflexibility after adaptation. So far there are not many adapted DC1 (5.3h sleep) sleepers that can flex the core sleeps by a lot. It would require lower sleep requirements overall, or experienced sleepers to be able to manage a flexible DC1. While it is possible to achieve this, the second core may have to remain '''stationary''', and the first core may not be any more flexible than 1h range (earlier/later than the originally scheduled time). The nap on DC1 may be flexible, but it is uncertain how flexible it can be. Regardless, more data is required to determine how flexible DC1 can be, compared to E2, whose second nap is highly flexible in a lot of adapted people.