Effects of High Ventilation Breathwork With Retention (HVBR) on Health

Inclusion Criteria (self-assessed): Fluent in English and living in the UK Have access to headphones Comfortable with faster breathing and holding breath Willing to only practice breathwork in safe environment, lying down in soft area (i.e., bed, sofa, carpet/mat), and always away from water & hard ground Willing to only practice the breathwork away from large meals (i.e., before or 1hour after) and bedtime (i.e., at least 1 hour before if practicing in evening) Exclusion Criteria (self-assessed): Hypotension or hypertension (low or high blood pressure) History of respiratory or cardiovascular/heart problems or disease History of fainting or syncope Epilepsy or seizures History of panic disorder or panic attacks Cerebral aneurysm Have had problems with prior breathwork sessions (i.e., fainting) Pregnancy, think one might be pregnant, trying to get pregnant, or are breastfeeding Any problems which affect one's ability to pace their breathing (i.e., active/chronic respiratory infection including blocked nose/cough/cold/fever, etc.), breathlessness, abnormally slow breathing (bradypnea), or abnormally fast breathing (tachypnoea) Any other physical/mental health conditions or current life events which impair or affect one's ability to engage in activities involving breath control Are taking any regular medication other than the contraceptive pill, including medications to reduce blood pressure (i.e., Ramipril or other ACE-inhibitors), beta blockers (i.e., Propranolol), antidepressants, anxiolytics or any other psychotropic medications