The human mind can control all the actions that the body does or can feel; because everyone has the ability to master their emotions, decide where to walk, how to act and thus be able to remain calm when under pressure. However, precisely because they are people who feel anguish or experience different feelings in a situation and not a robot, they can be in only one state of mind without reacting.
Because when an unpleasant sensation is present that occupies the mind and body, such as when you are waiting for the result of a medical analysis or you are in the waiting room of an operating room; it is quite likely that you feel a knot in your stomach that does not leave you calm and keeps you nervous. It is not criticizable, since it is not about bravery or weakness, but about moments that anyone can go through.
These types of emotions are not usually permanent, but momentary, they occur due to a particular situation and can be controlled after obtaining positive responses, solving the problems that arise or finding the solution to what has caused such physical and mental discomfort in people. The main and most important thing is that individually a balance must be found so as not to be dominated by this feeling, once you find a way to control it, there will come a point where you will not suffer the same.