Progressive Muscle Relaxation Exercise and Report to the Assignment link in eCampus and discussed in the Main forum. This assignment is directed toward providing additional experiential work by using progressive muscle relaxation (PMR), which is an important technique in behavior therapy either alone or in combination with other techniques (Parrott, 2003). Additionally, it is important to introduce you to a venerable tool for evaluating clinical responses that is frequently used in the field; namely, the Subjective Unit of Distress or SUD developed by Joseph Wolpe (1969). The former is briefly reviewed in the text, but the latter is not. To proceed, you need to do the following: