These sorts of physical responses to fear are associated with psychological responses such as feeling scared, tense, nervous or worried. (kidsmatter.edu.au)
Topics include psychological responses to traumatic or chronic illness, pain management, changing health - threatening behavior patterns, and enhancement of performance and health. (group-psychotherapy.com)
This is a purely psychological response, but it does make sense and it can have a profound impact on how you trade. (binaryoptionsu.com)