Stanislav Grof, MD, is a psychiatrist with over sixty years of experience in research of non-ordinary states of consciousness and one of the founders and chief theoreticians of transpersonal psychology. Christina Grof, PhDhc (1941-2014), was founder of the Spiritual Emergence Network (SEN). Together, they developed holotropic breathwork, an innovative form of experiential psychotherapy that Grof® Legacy Training is practicing and teaching worldwide under the name Grof® breathwork. For more information, visit www.grof-legacy-training.com.