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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. Blue light-blocking glasses don't protect eyes or ... - AOL

    www.aol.com/news/blue-light-blocking-glasses...

    Instead of wearing blue light-blocking lenses while they scroll before bed, Kolla recommends people try adopting better sleep habits, including going to sleep around the same time every night and ...

  4. Bates method - Wikipedia

    en.wikipedia.org/wiki/Bates_method

    The Bates method is an ineffective and potentially dangerous alternative therapy aimed at improving eyesight. Eye-care physician William Horatio Bates (1860–1931) held the erroneous belief that the extraocular muscles effected changes in focus and that "mental strain" caused abnormal action of these muscles; hence he believed that relieving ...

  5. Rapid eye movement sleep behavior disorder - Wikipedia

    en.wikipedia.org/wiki/Rapid_eye_movement_sleep...

    Rapid eye movement behavior disorder occurs when there is a loss of normal voluntary muscle atonia during REM sleep resulting in motor behavior in response to dream content. It can be caused by adverse reactions to certain drugs or during drug withdrawal; however, it is most often associated with the elderly and in those with neurodegenerative ...

  6. Health threat from cosmic rays - Wikipedia

    en.wikipedia.org/wiki/Health_threat_from_cosmic_rays

    Health threats from cosmic rays are the dangers posed by cosmic rays to astronauts on interplanetary missions or any missions that venture through the Van-Allen Belts or outside the Earth's magnetosphere. [ 1][ 2] They are one of the greatest barriers standing in the way of plans for interplanetary travel by crewed spacecraft, [ 3][ 4][ 5] but ...

  7. How much sleep do you need? - AOL

    www.aol.com/lifestyle/much-sleep-201727378.html

    Infants ages 0-3 months require about 14-17 hours of sleep daily. Toddlers ages 1-2 years need approximately 11-14 hours of daily sleep. Children ages 3-5 years should aim for 10-13 hours. Older ...

  8. We know late-night screens are bad for sleep. How do ... - AOL

    www.aol.com/news/know-night-screens-bad-sleep...

    The issue is not just curtailing phone use in bed, but phone use at night. That means redesigning your routine, particularly if you use your phone as a way to decompress. It helps to create ...

  9. Rapid eye movement sleep - Wikipedia

    en.wikipedia.org/wiki/Rapid_eye_movement_sleep

    Rapid eye movement sleep ( REM sleep or REMS) is a unique phase of sleep in mammals (including humans) and birds, characterized by random rapid movement of the eyes, accompanied by low muscle tone throughout the body, and the propensity of the sleeper to dream vividly. The REM phase is also known as paradoxical sleep ( PS) and sometimes ...

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