We live in a world of stressful situations. Stress is becoming a familiar attribute of modern life. Nevertheless, stress can negatively affect the body, leads to increased fatigue, decreased immunity, performance, etc. So, stress is a natural reaction of our body to external irritants. These can be: noise; conflict situations at work, at home, with children; death of a relative; divorce; imprisonment; serious illness, as well as – paradoxically – a wedding; the birth of a child; promotion. Stress...