Do diabetics have risk with Cardio Training?

Yes, one for instance is that exercise will lower your blood glucose levels. This happens because regular exercise makes your body more sensitive to insulin, which means your blood sugar level may get too low after exercising. This is something that you should keep a very close eye on, at least in the beginning until you get comfortable with how your sugar level readings are before, during and after your workouts. If one day your sugar level is a little to low after a certain type of exercising, then the next time you do the same workout take a protein bar with you to the gym and eat this during your workout.