Hello dear , I evaluated your query thoroughly. @ After pace maker the things are as it is shows that your heart & lungs are much weaker now & you have to adjust your activities according to the pace of your cardio respiratory system . Suggestions for you : # remain ambulatory till you don`t have breathlessness # manage to identify the point beyond which you do not have to more active physically # regular light exercises at home with deep breathing & YOGA help # plenty of liquids with nutritious diet # keep BP , Blood sugar, weight , Cholesterol levels under control # avoid alcohol / smoking if doing Hope this helps you to some extent. Feel free to ask any further questions. Wishing you a very healthy life ahead. thanks for using health care magic Regards dear.