a set of adaptive reactions of humans and animals that arise in response to significant adverse effects (stressors) in terms of strength and duration. The term was introduced by the scientist Hans Selye in 1936. There are three stages in the development of the adaptation syndrome:
1) The stage of anxiety (mobilization): includes two phases – shock and countershock;
2) The stage of resistance: the body’s resistance to various influences is increased;
3) Stage of exhaustion: the body’s resources are not enough to resist stressors, at this phase a somatic disease may occur; The worst option is the death of the organism.