Before entering fully into the meaning of the term fatigue, let's know its etymological origin. In this case, we can establish that it derives from Latin, specifically from "fatigare", which comes from "fatis", which can be translated as "groove" or "crack".
The concept of fatigue is used to refer to exhaustion , exhaustion , weakness or boredom . Whoever has fatigue, feels tired or annoying. For example: "From the second hour of play, the Belgian tennis player began to feel fatigue and his level fell" , "After so many years of working under pressure, the executive began to suffer from fatigue that did not allow him to concentrate" , "At the first symptoms of fatigue, a driver should pull off the road and stop to rest."
The idea of fatigue usually refers to the discomfort or tiredness caused by physical or mental effort . The person may feel sleepy, experience different pains or suffer from a feeling of discomfort. Fatigue, in that sense, disappears with rest and does not leave any sequelae.
When fatigue is physical, it can usually be reversed with rest and sleep. If the fatigue is mental, it is also important to rest and sleep, although relaxation and distraction are also needed to clear the mind .
Chronic fatigue syndrome , on the other hand, is a disorder that involves having extreme tiredness that does not go away despite rest. In this case, the subject may suffer persistent muscle pain, headache , memory problems and insomnia.
In the same way, we cannot ignore the existence of what is known as visual fatigue, which is the set of discomforts experienced after the eye has been subjected to effort for a considerable time. This effort may involve having spent many hours reading, in front of a computer screen or studying.
Among the most common symptoms that indicate that a person has visual fatigue are watering of the eyes, redness of the eyes, blurred vision, headache or a feeling of congestion in the bridge of the nose.
The way to relieve these symptoms is by carrying out measures such as being in a dark room with your eyes closed, performing a massage on the eye or temple area, applying cold to those if the eyelids or eyes are swollen. …
However, it is necessary to be aware that to avoid suffering this type of fatigue you must take measures such as not having reflections on the computer screen on which you are working, having the necessary amount of light in the room where you are, and Rest your eyes periodically.
For engineering , fatigue of a material occurs when it loses its mechanical resistance due to having been subjected to repeated stress for a long time. Material fatigue causes a material to break under the influence of cyclic dynamic loads.
The material, little by little, loses its load capacity: that is, it becomes fatigued. Small cracks inside it advance very slowly, finally causing it to break.