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  2. Kohnstamm's phenomenon - Wikipedia

    en.wikipedia.org/wiki/Kohnstamm's_phenomenon

    First described by German neurologist Oskar Kohnstamm (1871–1917) in 1915, Kohnstamm's phenomenon is a sustained involuntary contraction of a muscle after a prolonged voluntary contraction. The simplest demonstration, sometimes called "the floating arms experiment", is to have a subject press the arms against a door frame or wall for about ...

  3. Fasciculation - Wikipedia

    en.wikipedia.org/wiki/Fasciculation

    A fasciculation, or muscle twitch, is a spontaneous, involuntary muscle contraction and relaxation, involving fine muscle fibers. [1] They are common, with as many as 70% of people experiencing them. [1] They can be benign, or associated with more serious conditions. [1]

  4. Why is sitting for too long bad for your health? What new ...

    www.aol.com/lifestyle/why-sitting-too-long-bad...

    Young adults in the U.S. reportedly sit about nine to 10 hours a day, compared to older adults, who sit up to 13 hours a day. And a lot of us know that sitting for long periods of time can be harmful.

  5. Sitting all day increases risk of death. These exercises can ...

    www.aol.com/news/sitting-day-increases-risk...

    Sitting for more than a couple hours at a time is really injurious to your health,” Dr. Jordan Metzel, a sports medicine physician at the Hospital for Special Surgery in New York, told TODAY ...

  6. Sitting for more than 3 hours per day is responsible for ...

    www.aol.com/lifestyle/2016-09-27-sitting-for...

    A new study suggests that staying in a seated position for long periods of time can lead to a shortened lifespan.

  7. Sedentary lifestyle - Wikipedia

    en.wikipedia.org/wiki/Sedentary_lifestyle

    In the US population, prevalence of sitting watching television or videos at least 2 h/d was high in 2015-2016 (ranging from 59% to 65%); the estimated prevalence of computer use outside school or work for at least 1 h/d increased from 2001 to 2016 (from 43% to 56% for children, from 53% to 57% among adolescents, and from 29% to 50% for adults ...

  8. Psychomotor agitation - Wikipedia

    en.wikipedia.org/wiki/Psychomotor_agitation

    Typical manifestations include pacing around, wringing of the hands, uncontrolled tongue movement, pulling off clothing and putting it back on, and other similar actions. [1] In more severe cases, the motions may become harmful to the individual, and may involve things such as ripping , tearing, or chewing at the skin around one's fingernails ...

  9. Muscle contracture - Wikipedia

    en.wikipedia.org/wiki/Muscle_contracture

    Chronic toe walking leads to muscle contracture due to the lack of calf muscles being adequately stretched. Once the muscle contracture has developed, the voluntary toe walking then becomes involuntary. [2] If someone has a disability that causes spasticity (such as cerebral palsy), they may walk on their toes involuntarily.

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