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  2. Yawn - Wikipedia

    en.wikipedia.org/wiki/Yawn

    Usually 6 seconds [1] A yawn is a reflex in vertebrate animals characterized by a long inspiratory phase with gradual mouth gaping, followed by a brief climax (or acme) with muscle stretching, and a rapid expiratory phase with muscle relaxation, which typically lasts a few seconds.

  3. Neurobiological effects of physical exercise - Wikipedia

    en.wikipedia.org/wiki/Neurobiological_effects_of...

    Neuroplasticity is the process by which neurons adapt to a disturbance over time, and most often occurs in response to repeated exposure to stimuli. [27] Aerobic exercise increases the production of neurotrophic factors [note 1] (e.g., BDNF, IGF-1, VEGF) which mediate improvements in cognitive functions and various forms of memory by promoting blood vessel formation in the brain, adult ...

  4. Cramp - Wikipedia

    en.wikipedia.org/wiki/Cramp

    A cramp is a sudden, involuntary, painful skeletal muscle contraction [1] [2] or overshortening associated with electrical activity; [3] while generally temporary and non-damaging, they can cause significant pain and a paralysis-like immobility of the affected muscle. A cramp usually goes away on its own over several seconds or (sometimes ...

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

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

    Taking breaks from sitting every 30 to 60 minutes and moving throughout the day is recommended for everyone, including those who exercise regularly. Sitting still for more than an hour to 90 ...

  6. 22 cool-down stretches that will help prevent soreness after ...

    www.aol.com/news/try-cool-down-routine-every...

    Standing or sitting, drop your right ear toward your right shoulder and feel a stretch in the left side of the neck. Hold for 2-4 breaths, and then release and switch sides. Chin to chest stretch

  7. Around 20 minutes of exercise a day may balance out the ... - AOL

    www.aol.com/news/around-20-minutes-exercise-day...

    Too much sitting has been linked to an increased risk of early death, regardless of how much exercise you get, but a new study suggests daily activity may counteract the harmful effects of sitting.

  8. Stretch reflex - Wikipedia

    en.wikipedia.org/wiki/Stretch_reflex

    The stretch reflex (myotatic reflex), or more accurately "muscle stretch reflex", is a muscle contraction in response to stretching a muscle. The function of the reflex is generally thought to be maintaining the muscle at a constant length but the response is often coordinated across multiple muscles and even joints. [ 1 ]

  9. This Is How Long You Need To Work Out To Actually Lower Your ...

    www.aol.com/long-actually-lower-dementia-risk...

    Next time you’re struggling to find motivation to go a little harder at the gym, keep this in mind: It's not just your body that's reaping the benefits. You're also doing wonders for your brain ...