When I go to the gym, I usually leave my pump on . It doesn't really bounce around all that much, even when doing my jogging on the treadmill. So I wouldn't worry about that too much. As for programming a temp basal or suspending the pump, that would probably be the best thing to do during exercise. Speaking from experience, I have found that if I don't or forget, I usually end up leaving the gym like a zombie (which is pretty scary

) . But then again, I find that sometimes I also will drop low anyway. Like someone else mentioned, exercise tends to dramatically lower my blood sugar.
Hope this is helpful!
