Stress is most often defined as a person's physiological and psychological reaction to threatening stimuli from the environment, with the personal experience of stress being of fundamental importance for this reaction, primarily the emotions that stress causes in an individual, because each person is a "story for themselves". How we react to stress depends on our experience, personal capacities, current mood and many other characteristics of our personality. On the physical level, stress is a physiological process by which our body responds to a threat or danger. When our brain assesses some circumstances as threatening (in any sense, physical or psychological), it raises all its capacities to the maximum with increased alertness and attention. Professional stress is such a relationship between a person and their work environment that they assess as too demanding for their adaptive resources or capacities and threatening their well-being. Professional burden is understood as the total impact of assessed stresses in a particular profession, and is considered a precursor to burnout. Burnout syndrome is defined as exhaustion in professional work that occurs under the influence of personality variables and/or working conditions variables and that significantly limits or even prevents professional engagement.
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