Hi @itzkat, If Xanax helps, I wouldn't rule out anxiety. It's possible some underlying anxiety could cause a breathing dysfunction where your body subtly perceives a need of air falsely. Retraining your breathing and mind to relax I think might help you. If you know any slow breathing techniques, I would try those out. Have you looked up any kind of breath retraining or breathing techniques? You may not feel anxious at any given moment, but sometimes subtle stressors can unconsciously affect the way you breathe, and breath retraining would help the automated response to stop from falsely perceiving the need of air.