Dr. Doug Willen is a chiropractor and breathing specialist with over twenty-five years of clinical experience working with patients suffering from sleep-disordered breathing, chronic stress, and airway dysfunction. His work focuses on the intersection of breathing patterns, nervous system regulation, posture, and long-term health. After decades in practice, Dr. Willen became increasingly aware that many patients diagnosed with sleep apnea continued to struggle despite "successful" treatment. This led him to explore a broader, rehabilitation-based approach to breathing and airway health that emphasizes training, consistency, and physiological adaptation rather than symptom control alone. Dr. Willen is the creator of the Exhale Method and the Breathing Gym, a skills-based approach to improving breathing function and resilience over time.

He is also a longtime educator and content creator, sharing clinical insights on breathing, sleep, and human performance with a global audience. Apnea Unmasked reflects his commitment to helping patients better understand their condition, regain agency in their health, and move beyond fear-based or quick-fix solutions toward sustainable, long-term change.