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2. Circadian rhythm sleep disorder - Wikipedia

   en.wikipedia.org/.../Circadian_rhythm_sleep_disorder

   A circadian rhythm is an entrainable, endogenous, biological activity that has a period of roughly twenty-four hours. This internal time-keeping mechanism is centralized in the suprachiasmatic nucleus (SCN) of humans, and allows for the internal physiological mechanisms underlying sleep and alertness to become synchronized to external environmental cues, like the light-dark cycle. [4]

3. Sleep inertia - Wikipedia

   en.wikipedia.org/wiki/Sleep_inertia

   Sleep inertia is a physiological state of impaired cognitive and sensory-motor performance that is present immediately after awakening. It persists during the transition of sleep to wakefulness, where an individual will experience feelings of drowsiness, disorientation and a decline in motor dexterity.

4. Excessive daytime sleepiness - Wikipedia

   en.wikipedia.org/wiki/Excessive_daytime_sleepiness

   EDS can be a symptom of a number of factors and disorders. Specialists in sleep medicine are trained to diagnose them. Some are: Insufficient quality or quantity of night time sleep [5] Obstructive sleep apnea [6] Misalignments of the body's circadian pacemaker with the environment (e.g., jet lag, shift work, or other circadian rhythm sleep ...

5. Sleep disorder - Wikipedia

   en.wikipedia.org/wiki/Sleep_disorder

   Jet lag disorder – Jet lag disorder is a type of circadian rhythm sleep disorder that results from rapid travel across multiple time zones. Individuals experiencing jet lag may encounter symptoms such as excessive sleepiness, fatigue, insomnia, irritability, and gastrointestinal disturbances upon reaching their destination.

6. Here's How to 'Fix' Your Circadian Rhythm Naturally (Without ...

   www.aol.com/heres-fix-circadian-rhythm-naturally...

   Life can throw off your sleep-wake schedule—here are some steps you can take to get back on track, according to sleep docs. Skip to main content. 24/7 Help. For premium support please call: ...

7. Jet lag - Wikipedia

   en.wikipedia.org/wiki/Jet_lag

   Jet lag was previously classified as a circadian rhythm sleep disorder. [2] The condition may last several days before a traveller becomes fully adjusted to a new time zone; it takes on average one day per time zone crossed to reach circadian reentrainment. [3] Jet lag is especially an issue for airline pilots, aircraft crew, and frequent ...

8. How Circadian Rhythm Disorders Can Affect Your Sleep - AOL

   www.aol.com/circadian-rhythm-disorders-affect...

   All of these are examples of circadian rhythm disorders, which are problems with the alignment between your sleep-wake cycle and your responsibilities for the day—like going to work or school ...

9. Delayed sleep phase disorder - Wikipedia

   en.wikipedia.org/wiki/Delayed_sleep_phase_disorder

   Misdiagnosis of circadian rhythm sleep disorders as psychiatric conditions causes considerable distress to patients and their families, and leads to some patients being inappropriately prescribed psychoactive drugs. For many patients, diagnosis of DSPD is itself a life-changing breakthrough.