Clinical Research Directory

Inclusion Criteria: * (1) having received a professional diagnosis of post-traumatic stress disorder (PTSD) * (2) being able not to commit to another (new) treatment during the course of the study * (3) understanding English instructions fluently * (4) being 18 and above. Exclusion Criteria: * (1) having been exposed to breathwork any time in the past * (2) being unable to perform most basic tasks due to PTSD or other mental illness. * (3) Asthma, breathing problems, or a respiratory disorder (e.g., chronic obstructive pulmonary disease). * (4) Uncontrolled hypertension (i.e., systolic blood pressure/diastolic blood pressure \> 150/95), orthostatic hypotension (e.g., issues with fainting), or cardiovascular or peripheral arterial disease. * (5) Current or past diagnosis of a neurological disease (e.g., Parkinson's, multiple sclerosis, epilepsy, vasovagal syncope) * (6) Serious psychiatric disorder requiring hospitalization within the past 12 months * (7) Current substance use disorder or history of hospitalization for treatment of a substance use disorder. * (8) Current participation in another research study involving an intervention or treatment. * (9) Currently pregnant * (10) Any significant comorbidities or issues that, in the opinion of the investigators, could interfere with the study or lead to deleterious effects for the participant. * (11) Adults unable to consent * (12) Prisoners