This two hour workshop will cover the development and clinical uses of RSA/Resonant Breathing Therapies in the Soviet Union and its importation and further development in other countries. There will be a brief review of Heart Rate Variability (HRV) research and the anatomy/functioning of the relevant autonomic nervous system components. The second half of the workshop will cover the clinical applications of this breathing therapy and the variety of conditions (Anxiety, Asthma, Migraine, IBS, ADD) that may benefit from RSA/Resonant Breathing exercises. There will be a demonstration of a number of systems for providing respiratory/cardiac biofeedback and a discussion of methods for training and motivating clients.