Let's look more closely at this mechanism. The essence of "charisma" lies in two brain traits operating simultaneously: autonomic nervous system activation (the magnitude of emotional output) and ion channel sensitivity (heightened receptivity to information). Only a few percent of the population carries both traits at once.
An indicator called "heart rate variability (HRV)" makes this visible. HRV refers to the fluctuation in intervals between heartbeats and reflects the state of the autonomic nervous system. Your HRV pattern signals high emotional output, which triggers "synchronization" in the autonomic systems of those around you through your words and facial expressions. Psychology calls this phenomenon "emotional contagion." When you speak with passion, the heart rate and breathing rhythm of your listeners begin to sync with yours.
This power, however, carries an "asymmetry of influence." Your emotions transmit strongly to others, while their influence on you is comparatively small. In other words, you can be "overwriting" the emotional tone around you without realizing it. Becoming aware of this asymmetry is the first step toward using your flame as a warming hearth rather than letting it rage unchecked.