Patients with asthma, COPD or other chronic lung conditions always asks me whether exercise can reverse or improve the disease or improve lung capacity? Generally speaking, breathing exercises or pulmonary rehab program does not improve pulmonary functional capacity as measured by FEV1. However, they can perform exercises that may reduce shortness of breath, anxiety, and stress, related to underlying pulmonary diseases. Pursed lip breathing, belly breathing, and interval training are related to improvements in dyspnea. Read more on detailed instruction of theses exercise program for your patients.