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  1. en.wikipedia.org › wiki › FatigueFatigue - Wikipedia

    Fatigue describes a state of tiredness (which is not sleepiness), exhaustion [1] or loss of energy. [2] [3] Fatigue (in the medical sense) is sometimes associated with medical conditions including autoimmune disease, organ failure, chronic pain conditions, mood disorders, heart disease, infectious diseases, and post-infectious-disease states. [4] .

  2. Muscle fatigue is when muscles that were initially generating a normal amount of force, then experience a declining ability to generate force. It can be a result of vigorous exercise, but abnormal fatigue may be caused by barriers to or interference with the different.

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  4. The fatigue limit or endurance limit is the stress level below which an infinite number of loading cycles can be applied to a material without causing fatigue failure. [1] .

  5. en.wikipedia.org › wiki › LethargyLethargy - Wikipedia

    Lethargy is a state of tiredness, sleepiness, weariness, fatigue, sluggishness or lack of energy. It can be accompanied by depression , decreased motivation, or apathy . Lethargy can be a normal response to inadequate sleep, overexertion, overworking, stress, lack of exercise, improper nutrition, drug abuse, boredom , or a symptom of ...

  6. Within the branch of materials science known as material failure theory, the Goodman relation (also called a Goodman diagram, a Goodman-Haigh diagram, a Haigh diagram or a Haigh-Soderberg diagram) is an equation used to quantify the interaction of mean and alternating stresses on the fatigue life of a material. [1]

  7. Definition and context. Decision fatigue is a phrase popularised by John Tierney, and is the tendency for peoples’ decision making to become impaired as a result of having recently taken multiple decisions. [5] Decision fatigue has been hypothesised to be a symptom, or a result of ego depletion. [6] .

  8. Myalgic encephalomyelitis/chronic fatigue syndrome ( ME/CFS) is a serious long-term illness. People with ME/CFS experience a profound fatigue that does not go away with rest, sleep issues and problems with memory or concentration. They are able to do much less than before they became ill.