Stress is a non-specific (abnormal) condition or reaction of the body to various adverse factors (stressors) affecting it. Small stressful situations are necessary for a person, because they play an important role in further favourable changes in the life of the person himself. This is due to the release of adrenaline into the blood of a person during a stressful situation, as well as other biochemical reactions that help a person to solve a particular problem. In addition to its positive effects, stress can also lead to negative consequences. When a person is constantly exposed to stressful situations, his body strenuously spends its strength (energy), which leads to its rapid exhaustion. Since all organs are in a tense state, they are more susceptible to secondary adverse factors, for example, diseases.