Physiological responses during a single rebirthing (Breath work) session Physiological responses during the rebirthing treatment

Main Article Content

Omri Inbar
Or Inbar
Hanan Zohar
Dror Ofir


Objective: The present report aimed to look at the physiological responses during a typical single Rebirthing session.

Material and Methods: Ten healthy young women participated in the study. Their mean age, weight, and height were 37±2.7 years, 54.1±6.4 kg, and 161.2±4.9 cm, respectively. The Rebirthing sessions took place at the Israeli Rebirthing Center in Tel-Aviv. The treatments were carried out by a qualified Rebirthing therapist that has experienced thousands of rebirthing sessions during the last 15 years. Sessions were performed in a dark, quiet room and executed in a one-to-one set-up with the same trained therapist. After around 40-50 minutes, the session approached its end. Metabolic, cardiovascular, pulmonary, and gas-exchange variables were measured breath-by-breath using a commercial portable metabolic system. All data were transmitted wirelessly to an adjacent room in the clinic and continuously monitored by the study's chief researcher.

Results: The primary study findings demonstrated that a typical Rebirthing session involving long (45-50 minutes) voluntary hyperventilation generated VO2, RER, HR, and O2 pulse matching well with the physiological demands of the procedure (breath work). At the same time, the ventilatory-related responses exhibited, as expected, exaggerated outcomes, illustrated by the high session's peak and average values of the depth (tidal volume), breathing frequency, and minute ventilation. Gas-exchange attributes showed extremely shallow end-tidal CO2 levels, high end-tidal O2, high respiratory exchange ratio, and very high levels of O2 and CO2 ventilatory equivalents. No significant grievances regarding participants' physical and mental/emotional feelings were reported in the present study.

Conclusions: The present study could not solve the apparent divergence between the observed (acute) physiological responses (mainly severe Hypocapnia) and the subjective participants' pleasant emotional state, and in many cases, spiritually uplifting, at the end of each treatment session.


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How to Cite
Inbar, O., Inbar, O., Zohar, H., & Ofir, D. (2022). Physiological responses during a single rebirthing (Breath work) session: Physiological responses during the rebirthing treatment. Medical Science and Discovery, 9(6), 347–354.
Research Article
Author Biography

Dror Ofir, Israel Naval Medical Institute, Haifa, Israel

Research Fellow.

Received 2022-05-27
Accepted 2022-06-08
Published 2022-06-17


Smith EW. The body in psychotherapy. McFarland; 2010 Jun 28.

Totton N. Foreign bodies: recovering the history of body psychotherapy. InBody psychotherapy 2014 Jun 3 (pp. 19-38). Routledge.

Benz D, Weiss H. To the core of your experience. Luminas Press; 1989.

Braddock CJ. Body Voices: Using the power of breath, sound, and movement to heal and create new boundaries. PageMill Press; 1995.

Keleman S. Emotional anatomy: The structure of experience. Center Press (Berkeley, CA); 1985.

Orr L, Ray S. Rebirthing - renaissance au novel age. Ten Speed Press. 1983.

Begg D. Rebirthing--freedom from your past: A revolutionary way to change your life in 20 hours. Blue Ridge Summit, NC: Thorsons. 1999.

Leonard J, Laut P. Rebirthing: The science of enjoying all of your life. Trinity Publishing House; 1983.

Sisson C. Rebirthing Made Easy. A Gateway to Self-Knowledge, Aliveness and Compassion. Hay House Inc., 1985.

Dowling C. Rebirthing and Breastwork: A Powerful Technique for Personal Transformation. Piatkus Book, 2000.

Hornsveld H, Garssen B, van Spiegel P. Voluntary hyperventilation: the influence of duration and depth on the development of symptoms. Biological Psychology. 1995 Jun 1;40(3):299-312. DOI:

Sviderskaya NE, Bykov PV. Spatial organization of EEG activity during active hyperventilation (cyclic breath) I. general patterns of changes in brain functional state and the effect of paroxysmal activity. Human Physiology. 2006 Mar;32(2):140-9. DOI:

Rhinewine JP, Williams OJ. Holotropic breathwork: The potential role of a prolonged, voluntary hyperventilation procedure as an adjunct to psychotherapy. The Journal of Alternative and Complementary Medicine. 2007 Sep 1;13(7):771-6. DOI:

Wollburg E, Meuret AE, Conrad A, Roth WT, Kim S. Psychophysiological reactions to two levels of voluntary hyperventilation in panic disorder. Journal of Anxiety Disorders. 2008 Jun 1;22(5):886-98. DOI:

ATS/ERS task force: Standardization of lung function testing. Edited by V. Brusasco R. Crapo G. Viegi G. Eur Respir J. 26: 948–968, 2005

Holmér I, Gavhed D. Classification of metabolic and respiratory demands in fire fighting activity with extreme workloads. Applied ergonomics. 2007 Jan 1;38(1):45-52. DOI:

Wasserman K, Hansen JE, Sue DY, Stringer WW, Whipp BJ. Principle of Exercise Testing and Interpretation. Lippincott Williams & Wilkins, 2005.

Inbar OM, Oren A, Scheinowitz MI, Rotstein AR, Dlin RO, Casaburi RI. Normal cardiopulmonary responses during incremental exercise in 20-to 70-yr-old men. Medicine and science in sports and exercise. 1994 May 1;26:538-. DOI:

Damask MC, Schwarz Y, Weissman C. Energy measurements and requirements of critically ill patients. Critical Care Clinics. 1987 Jan 1;3(1):71-96. DOI:

IuA B, Ushakov IB. The mechanism of breathing under the conditions of prolonged voluntary hyperventilation. Aviakosmicheskaia i Ekologicheskaia Meditsina= Aerospace and Environmental Medicine. 1999 Jan 1;33(2):22-6.

Arena R, Sietsema KE. Cardiopulmonary exercise testing in the clinical evaluation of patients with heart and lung disease. Circulation. 2011 Feb 15;123(6):668-80. DOI:

Minyaev VI. Physiology of respiration. SPB:500-523, 1994.

Solopov IN. Human ability to assess and manage breathing function parameters: Diss. Dr. Honey. Sciences. Volgograd,1996.

Gibson TM. Hyperventilation in-flight. Aviation Space and Environ Med. 1984; 55(5):411-412,

Forster HV, Haouzi P, Dempsey JA. Control of breathing during exercise. Comprehensive Physiology. 2011 Jan;2(1):743-77. DOI:

Brignole M, Alboni P, Benditt D, Bergfeldt L, Blanc JJ, Bloch Thomsen PE, van Dijk JG, Fitzpatrick A, Hohnloser S, Janousek J, Kapoor W. Guidelines on management (diagnosis and treatment) of syncope. European heart journal. 2001 Aug 1;22(15):1256-306. DOI:

Higginbotham MB, Morris KG, Williams RS, McHale PA, Coleman RE, Cobb FR. Regulation of stroke volume during submaximal and maximal upright exercise in normal man. Circulation research. 1986 Feb;58(2):281-91. DOI:

Thadani U, Parker JO. Hemodynamics at rest and during supine and sitting bicycle exercise in normal subjects. The American journal of cardiology. 1978 Jan 1;41(1):52-9. DOI:

Poliner LR, Dehmer GJ, Lewis SE, Parkey RW, Blomqvist CG, Willerson JT. Left ventricular performance in normal subjects: a comparison of the responses to exercise in the upright and supine positions. Circulation. 1980 Sep;62(3):528-34. DOI:

Renlund DG, Gerstenblith GA, Fleg JL, Becker LC, Lakatta EG. Interaction between left ventricular end-diastolic and end-systolic volumes in normal humans. American Journal of Physiology-Heart and Circulatory Physiology. 1990 Feb 1;258(2):H473-81. DOI:

Pollard V, Prough DS, DeMelo AE, Deyo DJ, Uchida T, Widman R. The influence of carbon dioxide and body position on near-infrared spectroscopic assessment of cerebral hemoglobin oxygen saturation. Anesthesia & Analgesia. 1996 Feb 1;82(2):278-87. DOI:

Tercero J, Gracia I, Hurtado P, de Riva N, Carrero E, Garcia-Orellana M, Belda I, Rios J, Maldonado F, Fàbregas N, Valero R. Effects on cerebral blood flow of position changes, hyperoxia, CO2 partial pressure variations and the Valsalva manoeuvre: A study in healthy volunteers. European Journal of Anaesthesiology| EJA. 2021 Jan 1;38(1):49-57. DOI:

Favre ME, Lim V, Falvo MJ, Serrador JM. Cerebrovascular reactivity and cerebral autoregulation are improved in the supine posture compared to upright in healthy men and women. PloS one. 2020 Mar 2;15(3):e0229049. DOI:

Kontos HA, Wei EP, Raper AJ, Patterson Jr JL. Local mechanism of CO2 action of cat pial arterioles. Stroke. 1977 Mar;8(2):226-9. DOI:

McSwain SD, Hamel DS, Smith PB, Gentile MA, Srinivasan S, Meliones JN, Cheifetz IM. End-tidal and arterial carbon dioxide measurements correlate across all levels of physiologic dead space. Respiratory care. 2010 Mar 1;55(3):288-93.