A foundation principle of Holotropic Breathwork is that it is "facilitated" by trained individuals who are able to provide support through the process, whether in a public workshop or a private session.
Certification in the Grof Transpersonal Training requires about 600 hours of residential training that takes at least two years to complete. This allows time for integration of the life-changing material that inevitably arises when people do breathwork over an extended period and provides a community context for support of rapid change. Practitioners are trained in a way of "doing" that is called "not-doing"; that is, they become sensitized to refrain from any action on their part which is not purely facilitative of what is already happening with the breather. Rather than viewing Holotropic Breathwork as a technique, practitioners regard it as a simple, but safe, set and setting wherein breathers can dive into their internal exploration and find support for the infinitely vast scope of experiences that might arise. In addition to experiential training, The Grof Transpersonal Training also provides a broad range of didactic information on many issues that can arise as part of the work. Some of the subjects covered include: abnormal psychology, pharmacology, childhood sexual abuse, drug and alcohol abuse, world cosmologies, theologies, shamanism, recent theories of physics and other sciences, astrology, alchemy, imagery in nonordinary states of consciousness, perinatal and transpersonal themes in art and culture, the psychological and philosophical meaning of death, psychic phenomena, the use of intuition in transpersonal work, meditation, case examples of unusual transpersonal experiences, and ethical issues relevant to working with those in holotropic states.