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  2. Central nervous system fatigue - Wikipedia

    en.wikipedia.org/wiki/Central_Nervous_System_Fatigue

    In the brain, serotonin is a neurotransmitter and regulates arousal, behavior, sleep, and mood, among other things. [9] During prolonged exercise where central nervous system fatigue is present, serotonin levels in the brain are higher than normal physiological conditions; these higher levels can increase perceptions of effort and peripheral muscle fatigue. [9]

  3. Directed attention fatigue - Wikipedia

    en.wikipedia.org/wiki/Directed_attention_fatigue

    Directed attention fatigue (DAF) is a neuro-psychological phenomenon that results from overuse of the brain's inhibitory attention mechanisms, which handle incoming distractions while maintaining focus on a specific task. The greatest threat to a given focus of attention is competition from other stimuli that can cause a shift in focus.

  4. Why Am I Tired All the Time? We Have a Few Answers - AOL

    www.aol.com/why-am-tired-time-few-201000577.html

    6 Reasons You Might Be Tired All the Time. While it is normal to feel tired, sometimes it can be something more serious. In fact, fatigue is a key symptom of the following health conditions. 1 ...

  5. This is the reason you feel tired all of the time - AOL

    www.aol.com/news/reason-feel-tired-time...

    Eating whole foods is a common recommendation for combatting everyday fatigue, with leafy greens, nuts, seeds, and lean proteins all contributing to a well-rounded diet that should make a ...

  6. Fatigue - Wikipedia

    en.wikipedia.org/wiki/Fatigue

    Fatigue in a medical context is used to cover experiences of low energy that are not caused by normal life. [2] [3]A 2021 review proposed a definition for fatigue as a starting point for discussion: "A multi-dimensional phenomenon in which the biophysiological, cognitive, motivational and emotional state of the body is affected resulting in significant impairment of the individual's ability to ...

  7. The Real Reason Thinking So Hard Makes You Tired - AOL

    www.aol.com/news/real-reason-thinking-hard-makes...

    Scientists think they have figured out the reason why thinking hard can make you tired, giving new meaning to a “mental vacation.”A group of researchers at the Paris Brain Institute have shown ...

  8. Combat brain fatigue with these top expert tips - AOL

    www.aol.com/news/really-think-hard-hurts...

    Your brain has no nerve endings, so a pain in the brain is not like having a pain in the neck. But the mental effort it takes to think hard can be so upsetting that some people will choose ...

  9. Neurasthenia - Wikipedia

    en.wikipedia.org/wiki/Neurasthenia

    Under "F48.0 Neurasthenia", the characteristics of the disorder differ among various cultures. Two overlapping symptoms can be present: Increased fatigue after mental exertion can be associated with a reduction in cognitive function. Minimal physical effort might be felt as extreme fatigue along with pain and anxiety.

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