From Daniel Siegel’s book:
Our instinctual survival responses to fight, flee, freeze, or even collapse may become activated on the low road and dominate our behavior. The body’s response may reveal these old instinctual reflexes in automatic patterns of response, such as tightened muscles in anger, an impulse to run away in fear, or a sense of being numb and immobilized. Becoming aware of our bodily sensations is a first step to understanding the experiences of the low road.
Making a conscious effort to alter our bodily reactions on the low road can help to free us from the prison of these ingrained reflexes. The brain looks to the body to know how it feels and to assess the meaning of things; thus, becoming aware of our bodily reactions can be a direct and effective means to deal with low-road immersion.
Alexander Technique would help with this.