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  2. Biological effects of high-energy visible light - Wikipedia

    en.wikipedia.org/wiki/Biological_effects_of_high...

    Blue light, a type of high-energy light, is part of the visible light spectrum. High-energy visible light (HEV light) is short-wave light in the violet/blue band from 400 to 450 nm in the visible spectrum, which has a number of purported negative biological effects, namely on circadian rhythm and retinal health (blue-light hazard), which can lead to age-related macular degeneration.

  3. Over 77% of red-eye flights are delayed here: Worst airports ...

    www.aol.com/over-77-red-eye-flights-203919265.html

    Detroit Metropolitan Wayne County Airport, 39.48%% late flights delayed, average delay time of 11.91 minutes. Salt Lake City International Airport, 33.47% late flights delayed, average delay time ...

  4. How to sleep on a plane: Doctors and travel experts share ...

    www.aol.com/lifestyle/sleep-plane-doctors-travel...

    Here are her tried-and-true tips after 25 years as a professional traveler: Avoid caffeine: Brown recommends turning down the in-flight coffee service so that the caffeine doesn't keep you up ...

  5. Why People Swear by the 'Cocoon' Sleep Hack: 'Best ... - AOL

    www.aol.com/why-people-swear-cocoon-sleep...

    People swear by the cozy "cocoon" sleep hack for a better night's sleep. An expert shares how it works and its benefits. People swear by the cozy "cocoon" sleep hack for a better night's sleep. An ...

  6. List of languages by total number of speakers - Wikipedia

    en.wikipedia.org/wiki/List_of_languages_by_total...

    Principal language families of the world (and in some cases geographic groups of families). For greater detail, see Distribution of languages in the world. This is a list of languages by total number of speakers. It is difficult to define what constitutes a language as opposed to a dialect.

  7. Unihemispheric slow-wave sleep - Wikipedia

    en.wikipedia.org/wiki/Unihemispheric_slow-wave_sleep

    In USWS, also known as asymmetric slow-wave sleep, one half of the brain is in deep sleep, a form of non-rapid eye movement sleep and the eye corresponding to this half is closed while the other eye remains open. When examined by electroencephalography (EEG), the characteristic slow-wave sleep tracings are seen from one side while the other ...

  8. Sleep Breakdown: Is Sleeping in a Recliner Chair Bad for You?

    www.aol.com/sleep-breakdown-sleeping-recliner...

    Nuzzo says sleeping in a recliner chair changes your posture and how your internal organs are supported, which can eventually impact digestion. Poor circulation to the abdominal area for a long ...

  9. Refractive error - Wikipedia

    en.wikipedia.org/wiki/Refractive_error

    It is estimated that at least 2 billion people in the world have refractive errors. [4] The number of people globally with refractive errors that have not been corrected was estimated at 660 million (10 per 100 people) in 2013. [9] Refractive Errors are the first common cause of Visual Impairment and second most common cause of visual loss . [45]