Any virus or even the smallest bacteria can enter and collapse {quickly or slowly} the immune system. whose role is to protect the emotional system from penetration or contamination. The emotional system does not mature early. {age 5-7}. When your emotional immune system is weak, it is enough for someone to wake you up and the emotional immune system goes into trauma. If our emotions had an immune system like the body's, then we would be in excellent condition. .injury, penetration. An attack from the outside - they would penetrate the shell. But we don't reach emotions... external vulnerability is the great enemy of the integrity of our emotions. Because our emotional immune system is deprived of a defense system for the emotions themselves. Physical external pollution does not disturb the body, only emotional pollution. Is there external pollution? Charming, you take a shower and everything is fine. Infection enters the body mainly through emotions. The emotions of an adult are no different from those of a child, they have not been upgraded since then. We continue to behave emotionally at the level of a six-year-old child: "You can't do this to me?" It's not fair. It was unfair. Why me and why not someone else? The emotional system does not grow together with the body, it stops at a very early age. You can be an adult but emotionally remain at the same level as a six year old child, you are not emotionally developed. You remain with the same complexes, or weaknesses. Our emotional system works on an infantile system. which is based on a process of reward and punishment. We are constantly harmed by humans. And getting hurt without having an immune system to protect you - is part of the internal fall. The immune system is a complex set of organs, cells and molecules, whose role is to protect the body against the invasion of pathogenic microorganisms, such as bacteria, viruses, fungi and various parasites, as well as against toxins and the development of cancer. Among the various components of the immune system, there are extensive interrelationships, which allow them to act in a synchronized and coordinated manner against foreign invaders that pose a danger to the body. In fact, the immune system works all the time[1], but we usually only pay attention to it when it "fails". The field of biology that deals with the activity of the immune system is called immunology. Wikipedia
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5442367/