o Diagnosis of CF by: Sweat chloride ≥60meq/L on two occasions or CFTR genotype with two CF disease-causing mutations and one or more phenotypic features of CF
Age ≥12 and ≤25 years
FEV1 ≥40 % predicted at screening visit
Informed consent and assent
You may not be if
Wheezing on auscultation of the chest at the enrollment visit
Oxygen saturation \< 90 % at the enrollment visit
Initiation of treatment with oral, inhaled or intravenous antibiotics for an acute respiratory infection in the 2 weeks preceding the enrollment visit
Pregnancy
History of lung transplant
Practiced yoga regularly (≥1 time per week) in the month prior to enrollment
Current enrollment in a therapeutic clinical trial
Condition or situation which, in the opinion of the investigator, would affect the ability of the patient or family to complete study procedures