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2. 8 Headphones You Can Comfortably Wear to Sleep - AOL

   www.aol.com/8-headphones-comfortably-wear-sleep...

   Ahead, eight versions of sleep headphones that are doing it best, depending on your sleep and ear needs. Download a 12-hour long brown noise playlist and call it a night. Sleep Headphones

3. A sleep psychologist recommends the 3-2-1 rule to help you ...

   www.aol.com/news/3-2-1-rule-expert-020757765.html

   The 3-2-1 rule. There are three things you should cut out before bed in order to achieve a better night’s sleep. Breus broke down what they are and when to quit them with these simple guidelines ...

4. Sleep Doctors Say *This* Is The Best Temperature for Sleep - AOL

   www.aol.com/sleep-doctors-best-temperature-sleep...

   The best way to prep your sleep space is simply to set your thermostat to the optimal sleeping temperature 60 to 67° F about an hour or so before bed, says Dr. Paul Harris. However, there are a ...

5. Sleep cycle - Wikipedia

   en.wikipedia.org/wiki/Sleep_cycle

   The sleep cycle is an oscillation between the slow-wave and REM (paradoxical) phases of sleep. It is sometimes called the ultradian sleep cycle, sleep–dream cycle, or REM-NREM cycle, to distinguish it from the circadian alternation between sleep and wakefulness. In humans, this cycle takes 70 to 110 minutes (90 ± 20 minutes). [1]

6. Sleep deprivation - Wikipedia

   en.wikipedia.org/wiki/Sleep_deprivation

   Treatment. Cognitive behavioral therapy, caffeine (to induce alertness), sleeping pills. Sleep deprivation, also known as sleep insufficiency[2] or sleeplessness, is the condition of not having adequate duration and/or quality of sleep to support decent alertness, performance, and health. It can be either chronic or acute and may vary widely in ...

7. Headphones - Wikipedia

   en.wikipedia.org/wiki/Headphones

   Headphones are also known as earphones[1] or, colloquially, cans. [2] Circumaural (around the ear) and supra-aural (over the ear) headphones use a band over the top of the head to hold the drivers in place. Another type, known as earbuds or earpieces, [1] consists of individual units that plug into the user's ear canal.