<s>[INST] i have been treated with bronchitis before ..  i am fine when i doing my regular routine but when i get too excited ,or if the weather is cold or when i am running or do work out i find it difficult to breathe due to which i cannot continue my activities and i have to calm down to get back to normal . can i find a soution ? [/INST] Thanks for your question on Chat Doctor. I can understand your concern. In my opinion, we should rule out chronic bronchitis in your case. So better to consult pulmonologist and get done PFT (Pulmonary Function Test).PFT will not only diagnose bronchitis, but it will also tell you about severity of the disease and treatment is based on severity only. You may need to need inhaled bronchodilators (formoterol or albuterol) for longer duration. Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks. </s>