What is Fatigue Fatigue is the state of reduced interest and desire, and this constitutes psychological explanation. It is the state or condition in which the nerves do not react and mind becomes lax and inert. Evidently, fatigue is neither purely physical nor exclusively mental. It is a psychological state of exhaustion. Reduce efficiency or capacity of body as well as mind is implicit in this phenomenon. Kinds of Fatigue Fatigue is of many kinds just as capacity. However, it is generally believed to be of four kinds. 1. Mental Fatigue: Mental work, or any kind of strain on the mind reduces the capacity of the mind for work and causes mental fatigue. Thus in mental fatigue, the mind tries or the capacity to its minute fibres for work is diminished. 2. Physical Fatigue:
This type of fatigue results in the reduction in the capacity of the muscles of the body and a feeling of fatigue. In this way physical fatigue is brought about by physical exertion. Even though the body feels tired due to mental exertion which should normally result in mental fatigue, yet on account of close relation of the two, it also produces physical fatigue. Thus mental fatigue is unavoidable and it lead to physical fatigue.