Changes

==Mechanism==

==Mechanism==

This flexible biphasic schedule contains '''2 sleeps per day''' (for the vast majority of days) without reducing the total time spent in bed. For example, a person who needs 8 hours of sleep each day can have a 6-hour core sleep at night and 2 hour siesta during the day. It has a lot of variations and flexibility in scheduling and has actually been done in the past in a way or another. For example, the experimenters reported certain positive results – sleeping 4 hours at night and 2 hours during the day (resembling Siesta), or 2 4-hour blocks (resembling Segmented sleep) was tested and results were shown to be positive short-term. Regarding daily lifestyle, many may find themselves naturally biphasic sleepers with a main core sleep at night that covers most or all of their SWS and REM need, complemented with a nap of '''varying lengths''' during the day '''depending on how sleepy they are'''.  

This flexible biphasic schedule contains '''2 sleeps per day''' (for the vast majority of days) without reducing the total time spent in bed. For example, a person who needs 8 hours of sleep each day can have a 6-hour core sleep at night and 2 hour siesta during the day. It has a lot of variations and flexibility in scheduling and has actually been done in the past in a way or another. For example, the experimenters reported certain positive results – sleeping 4 hours at night and 2 hours during the day (resembling Siesta), or 2 4-hour blocks (resembling Segmented sleep) was tested and results were shown to be positive short-term. Regarding daily lifestyle, many may find themselves naturally biphasic sleepers with a main core sleep at night that covers most or all of their [https://en.wikipedia.org/wiki/Slow-wave_sleep SWS] and [https://en.wikipedia.org/wiki/Rapid_eye_movement_sleep REM] need, complemented with a nap of '''varying lengths''' during the day '''depending on how sleepy they are'''.  

'''One reason why people come to polyphasic sleeping and attempt other sleep-reducing schedules is to gain more wake time each day,''' not knowing that '''non-reducing polyphasic schedules are also viable alternatives'''. Thus, there have been few official attempts for this schedule that have been fully logged and reported up to date (all of which are at least somewhat positive experiences), due to the unappealing aspect of not being able to reduce a lot of hours spent sleeping. However, it has the potential to naturally reduce a tiny amount of total sleep each day with entrained biphasic sleeping and dark period; this hypothesis still requires a big enough sample size to confirm if some sleep reduction is possible.  

'''One reason why people come to polyphasic sleeping and attempt other sleep-reducing schedules is to gain more wake time each day,''' not knowing that '''non-reducing polyphasic schedules are also viable alternatives'''. Thus, there have been few official attempts for this schedule that have been fully logged and reported up to date (all of which are at least somewhat positive experiences), due to the unappealing aspect of not being able to reduce a lot of hours spent sleeping. However, it has the potential to naturally reduce a tiny amount of total sleep each day with entrained biphasic sleeping and dark period; this hypothesis still requires a big enough sample size to confirm if some sleep reduction is possible.