General Fatigue Symptoms The onset of general fatigue in a person doing light work is seldom notice by the subject. He is unaware that his standards of performance are deteriorating and he may even believe that his efficiency is steadily increasing. His sense of timing is the first to fail and errors and accidents begin to appear. As fatigue advances the worker's grasp of the over-all plan of the operation begins to fade so that eventually only the most prominent features of the task are performed and the rest are ignored. Attention is finally shifted from the performance of the task to the discomfort of the body. Deterioration in skill now proceeds rapidly. Physiological fatigue is not the only factor which influences work performance. The importance of psychological, social and socio-economic factors is gradually being realized by industrial physicians and management officials. Under certain favorable conditions industrial output may actually increase toward the end of the working day in spite of fatigue. Music, for example, facilitates the social contacts between workers and relieves their boredom. It is most appreciated by those doing repetitive manual tasks, but may hinder those whose work demands a high degree of mental effort. To be most effective, music should be presented on two or three occasions during the working day but for comparatively short periods of time. Music time should be adjusted to industrial output curves so as to offset decrements ascribable to ennui or fatigue. Chronic Fatigue (Staleness)  Fatigue is chronic when it is not relieved by a good night's sleep. Some of the prominent symptoms of this very common condition are: subjective feeling of tiredness, loss of interest in work and other daily activities, an increase in the effort which is necessary to perform the usual work, increased irritability and general emotional instability, loss of weight, poor appetite, increase in resting pulse rate and lowered blood pressure, a tendency to sigh frequently, tremor of the outstretched hands, pallor and increased consumption of coffee, tobacco and alcohol. The most frequent causes of chronic fatigue are long hours of work, lack of sleep, maladjustment and worry. The symptoms usually disappear after a period of rest away from work.		Home Pace Motivation Measures of Endurance Computation of Dietary Requirement Work Efficiency Maximum Steady State Work Inefficiency of Anaerobic Work Estimation of Work Efficiency Efficiency of Grade Climbing Low Economy of Slow Work Maximum Rate of Work Levers of the Body Fatigue and Recovery General Fatigue Symptoms Anxiety State Organic Fatigue Cortical Motor and Sensory Centers Effect of Exercise on Mental Work Visual Fatigue Muscular Fatigue Fatigue Prevention and Recuperation