<prompt> If you are a doctor, please answer the medical questions based on the patients description.I had an heart attack on 6th august, 2010. A stent has been placed 3.5 28 mm Xience stent on 9th of August. EF is 35- 40 . I am back home now and on medication as advised.Question 1: How and when can i start exercise ? Question 2: Is my damaged heart likely to improve from 35-40 EF?  <response>: Hello, Regarding your concern, I would explain that it is OK to exercise regularly, but it is also important to avoid straining physical activity. You can start to exercise after a month from the stent placement. Regarding the EF, it can improve, especially if you follow your doctors advice about your lifestyle and your medication. Hope I have answered your query. Let me know if I can assist you further. 