If you are not familiar with the controlled breathing procedure, go through it yourself, and notice what sensations you become aware of. How could you facilitate a client doing this in a way that might allow his panic symptoms to be replicated, i.e. not too defensively, and not too extremely?
1. As CBT is a psychological therapy, and emphasises cognitive and behavioural aspects, what do you understand to be the reasons for considering physiological variables, and physical interventions?
2. From your current case-load, draw a formulation diagram where breaking into a negative cycle with relaxation would be helpful.