Hi, may I answer your health queries right now ?  Please type your query hhere... Hello doctor this is my question for the last couple of weeks me and my boyfriend have gone out jogging atleast once a week but latley he can only jog for a couple of min when he has to stop because be says he feels like he has mucus building up in his chest and he cant breath what is this about and what can we do to make it better
Thanks for your question on Chat Doctor. I can understand your concern. Your boyfriend is having chest congestion (mucus build up) and breathing difficulty on exertion (jogging). So we should definitely rule out heart (congestive heart failure) and lung (bronchitis) related diseases. So get done ECG, 2d echo and stress test (trade mill test). If all these are normal then no need to worry about heart diseases. Get done chest x-ray and PFT (Pulmonary Function Test) to rule out lung diseases. Smoking cessation is must if he is a active smoker. Weight reduction is advisable if he is obese. Hope I have solved your query. I will be happy to help you further. Wishing good health to your boyfriend. Thanks.