Thanks for your question on Health Care Magic. I can understand your concern. You are taking wysolone. This is oral steroid. Oral steroids are known to cause immunosuppression. So possibility of infection is high in your case. So traveling in crowded area, visiting hospitals etc should be avoided to prevent infection. Eat Healthy food like fruits, vegetables, start multivitamin and antioxidants tablet to improve your immunity. Yes, you should definitely do yoga and pranayam. Both are good for health. Better to enroll yourself in Pulmonary Rehabilitation center where chest physiotherapy and deep breathing exercises are done. These will improve your lung functions. Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.