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== Stage 1 ==
== Stage 1 ==
Staying awake is easy during this stage when sleep deprivation still hasn't kicked in. Falling asleep usually is difficult for naps and easy for cores, assuming the person isn't [[Insomnia|insomniac]] and the scheduled core doesn't start earlier than the habitual sleep before. Repartitioning hasn't started yet, so the sleep quality is the same and in monophasic sleep, presumably with 90-minute uncompressed cycles. This stage is also beneficial for adjusting to new sleep habits.
Staying awake is easy during this stage when [[wikipedia:Sleep_deprivation|sleep deprivation]] still hasn't kicked in. Falling asleep usually is difficult for naps and easy for cores, assuming the person isn't [[Insomnia|insomniac]] and the scheduled core doesn't start earlier than the habitual sleep before. Repartitioning hasn't started yet, so the sleep quality is the same and in monophasic sleep, presumably with 90-minute uncompressed cycles. This stage is also beneficial for adjusting to new sleep habits.
The duration of Stage 1 is shorter for the schedules with a low total sleep time or for individuals with preexisting sleep debt. This doesn't shorten the whole adaptation process though, usually just making Stage 3 and 4 longer. Insomniacs might find skipping this stage helpful since it's much easier to fall asleep on the later stages, but generally this isn't recommended. The benefit of falling asleep faster doesn't compensate the higher risk of oversleeping and longer period of having intense sleep deprivation symptoms.
The duration of Stage 1 is shorter for the schedules with a low total sleep time or for individuals with preexisting sleep debt. This doesn't shorten the whole adaptation process though, usually just making Stage 3 and 4 longer. Insomniacs might find skipping this stage helpful since it's much easier to fall asleep on the later stages, but generally this isn't recommended. The benefit of falling asleep faster doesn't compensate the higher risk of oversleeping and longer period of having intense sleep deprivation symptoms.
