Final answer:
The coach is using Autogenic Training, a technique where the focus on bodily sensations helps achieve relaxation, unlike biofeedback or other relaxation methods.
Step-by-step explanation:
The relaxation technique being used by the coach in guiding the 59 year old man to focus on the warmth in different parts of his body and to relax those parts is an example of Autogenic Training. This method involves self-relaxation techniques where one focuses on bodily sensations to achieve a state of relaxation, similar to the components of the relaxation response technique developed by Herbert Benson which includes a focus on pleasant thoughts and bodily sensations such as warmth. It is distinct from biofeedback-assisted relaxation, progressive relaxation, and guided imagery which involve other processes or feedback mechanisms.