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  2. 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.

  3. What Muscles Are Used in Jumping Jacks? Trainers Break It Down

    www.aol.com/lifestyle/muscles-used-jumping-jacks...

    "The deltoids are located at the top of the arm and cover the shoulder joint," Julom explains. "When doing jumping jacks, the arms move up and down, engaging the deltoids and building strength and ...

  4. Kohnstamm's phenomenon - Wikipedia

    en.wikipedia.org/wiki/Kohnstamm's_phenomenon

    The arm will involuntarily rise. Russian scientists Victor Gurfinkel, Mikhail Lebedev and Yuri Levick used Kohnstamm's phenomenon to activate tonogenic structures in humans and thereby demonstrate postural automatisms, such as neck reflexes.

  5. Kip-up - Wikipedia

    en.wikipedia.org/wiki/Kip-up

    Video of a kip-up A nip-up performed during an acro dance routine Not to be confused with the juggling of a football known as kick-ups . A kip-up or kick-up (also called a rising handspring , Chinese get up , kick-to-stand , nip-up , [ 1 ] flip-up , or carp skip-up ) is an acrobatic move in which a person transitions from a supine , and less ...

  6. What the Hell Is 'Bed Rotting' and Why Is It Trending ... - AOL

    www.aol.com/hell-bed-rotting-why-trending...

    Bed rotting and carcass time are two TikTok self-care trends that involve staying in bed all day. We asked experts if they're healthy forms of self care.

  7. Camptocormia - Wikipedia

    en.wikipedia.org/wiki/Camptocormia

    A clinical photograph showing a patient with the flexed posture. It can be abated when lying down. [1]Camptocormia, also known as bent spine syndrome (BSS), is a symptom of a multitude of diseases that is most commonly seen in the elderly.

  8. Why Arm Holdings Stock Is Jumping Today

    www.aol.com/why-arm-holdings-stock-jumping...

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  9. Free jumping - Wikipedia

    en.wikipedia.org/wiki/Free_jumping

    A horse free jumping. Free jumping or loose jumping is the practice of jumping a horse without a rider. It is often conducted in a chute and is used most often to evaluate the jumping ability of horses too young to jump under saddle. [1] The correlations between free jumping and eventual success in show jumping competition