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  2. Yawn - Wikipedia

    en.wikipedia.org/wiki/Yawn

    Yawning may be an offshoot of the same imitative impulse. A 2007 study found that young children with autism spectrum disorders do not increase their yawning frequency after seeing videos of other people yawning, in contrast to neurotypical children. In fact, the autistic children actually yawned less during the videos of yawning than during ...

  3. Why you yawn when you’re bored, according to experts - AOL

    www.aol.com/lifestyle/why-yawn-bored-according...

    Reasons we we yawn. It was once believed that the main function of yawning was to increase otherwise low oxygen levels, but a 1987 study disproved that theory. And despite extensive additional ...

  4. Why do we yawn — and why is it so contagious? Experts explain.

    www.aol.com/news/why-do-we-yawn-and-why-is-it-so...

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  5. Hypnic jerk - Wikipedia

    en.wikipedia.org/wiki/Hypnic_jerk

    A hypnic jerk, hypnagogic jerk, sleep start, sleep twitch, myoclonic jerk, or night start is a brief and sudden involuntary contraction of the muscles of the body which occurs when a person is beginning to fall asleep, often causing the person to jump and awaken suddenly for a moment.

  6. Microsleep - Wikipedia

    en.wikipedia.org/wiki/Microsleep

    Reaction time test, Karolinska Sleepiness Scale (KSS), [29] Maintenance of Wakefulness Test (MWT), [30] Multiple Sleep Latency Test (MSLT). [31] Electrooculogram (EOG) EOG is a technique for measuring the resting potential of the retina in the human eye. [32] Eye-video test: Measures eyes blinking and eye movements to detect microsleep events ...

  7. Witching hour - Wikipedia

    en.wikipedia.org/wiki/Witching_hour

    The term can also refer to a phenomenon where infants or young children cry for an extended period of time during the hour (or two) before their bedtime, becoming irritable and unwieldy with no known cause. [14] To reduce gun violence, curfew hours in Washington D.C. have been in force between 11:00 pm and 12:00 am to lower juvenile gunfire ...

  8. A Sleep Expert Warns Against "Unhealthy" Sleep Trend - AOL

    www.aol.com/sleep-expert-warns-against-unhealthy...

    Another reason some people choose this type of sleep pattern is so they have more time during a 24-hour period to get other tasks done. ... you can get screwed up easily. We do that because we get ...

  9. YouTube Music - Wikipedia

    en.wikipedia.org/wiki/YouTube_Music

    YouTube Music is a music streaming service developed by the American video platform YouTube, a subsidiary of Google.The service is designed with a user interface that allows users to explore songs and music videos on YouTube based on genres, playlists, and recommendations.