It is important to carefully follow the instructions on how to use the Breather. If you feel unwell or lightheaded when using the Breather for the first time, it is important to reduce and/or stop your training. As with any form of training, it is essential to listen to your body and to not over-exercise. If the instructions are followed, the Breather is not known to have adverse effects. Please check with your physician if you have health problems before using the Breather.
Careful evaluation is recommended before initiation of therapy for: active hemoptysis, untreated pneumothorax, esophageal surgery, airway stenosis (true vocal fold mass, vocal fold paralysis in adducted position, subglottic stenosis, etc), intracranial pressure > 20mm Hg, recent oral, facial or skull trauma / surgery, acute sinusitis, epistaxis, hemodynamic instability, bolus emphysema, tympanic membrane rupture or middle ear pathology.