Hello Woesy68, I think you have raised a very important issue--whether to exercise or not if you have MG. I have noticed that breathing exercises can be very helpful. I do some pranayama (yoga) involving deep breathing. I think one may also benefit from simple deep breathing for a session of 10 or 15 minutes before breakfast and may be another session some time in the evening when the stomach is not full. I have also noticed that walking--not too fast--for some half an hour everyday can make one feel fit. In fact, it's a good idea to do the breathing exercises after finishing the walking. If you enjoy meditation , then that can follow the breathing exercises, and you will have a sense of well being. I don't think the gym is a good idea for an MG patient, unless, of course, you have top notch supervision tailor made for you. I would love to hear from community members on their experience with exercise.