FORMATION OF COUNTERACTION TO THE STRESSFUL EFFECT OF EXTERNAL FACTORS
Stress is one of the normal states of the body, as it is associated with an increase in adaptive mechanisms. Stress is an integral part of life. Stress responses phylogenetically helped a person cope with difficulties, so in this aspect, stress responses are useful. However, when stress has a bright expression and long-term manifestation, in this case it causes harm to human health. According to the type of impact, stress can be systemic and mental. Systemic stress reflects the body's response to injuries, inflammation, infections, and so on. Mental stress first causes changes in the psycho-emotional sphere, and then manifests itself at the biological level. Hans Selye is considered the founder of the theory of biological stress. The Hans Selye’s model of general adaptation syndrome provides a clear biological explanation of how the body reacts and adapts to stress. In his research, Selye noticed that the body adapts to external stressors from the point of view of a biological model that tries to restore and maintain internal balance. In its attempt to maintain homeostasis, the body uses a hormonal response that directly fights the stressor. The body's struggle against stress is the main theme of the general adaptation syndrome. Another observation that Selye found was that stress responses have their limits. The body's limited supply of energy to adapt to a stressful environment is depleted when the body is constantly exposed to a stressor.