Anger-In Theory
The anger-in theory proposes that physical illnesses that are cause or affected by stress are caused by a person not expressing emotions such as anger or resentment. Psychophysiological illnesses include hypertension, headaches, heart disease, and stomach problems such as ulcers. The anger-in theory proposes that psychophysiological sickness is due to the 'bottling up' and non-release of anger related emotions.
People think they can destress and regulate their emotions by using only their minds.
The Vagus Nerve Miracle