Anxiety and tachycardia have a close “natural” correlation that goes back to a primordial human defense mechanism. In primitives, in fact, the anxious state was mainly associated with a situation of danger and had the precise function of favoring the individual’s escape from potential danger, thereby increasing blood flow and therefore heartbeat.

What is stress?
Stress is defined as the reaction to an external stimulus that involves a change in the person’s habits, and for this reason it is also incorporated into the definition of general adaptation syndrome. However, stress does not always have to be understood as something negative. In fact, there is the so-called “eustress” which is…