You may know that adrenaline, the fight-or-flight hormone, increases heart rate and breathing and improves oxygen delivery to your muscles. But it also stimulates the release of glucose from glycogen, the stored form of glucose in muscle and liver. Unfortunately, when you have autonomic neuropathy—damage to the nerves that control many of the body's involuntary functions—adrenaline release may be reduced, which means that not enough blood sugar will be released and you'll wind up with low blood sugar.
And in some cases, exercise can cause your blood sugar to spike. If you don't have a problem releasing adrenaline, then it does its job, sending extra glucose into the bloodstream. But if you don't have enough insulin to "cover" all this extra glucose, your blood sugar could become too high, sometimes staying high for a period of time following the workout.
This might make you a little nervous or frightened—but don't be. Simply know that when you start exercising more, you may need to work with your doctor to adjust your medication as well as your pre-exercise carbohydrate levels (as explained below). And you should test your blood sugar before, during and after exercise, as your reactions to exercise aren't always predictable.
The Best Life plan for diabetes can help make sure you get the right combination of carbohydrates and calories, working along with your prescribed medications, to keep your blood sugar levels regulated as you increase your physical activity.
Follow these basic eating and exercise guidelines