The three cornerstones in the treatment of diabetes are food, medications, and activity. Of these three, activity is often a first choice for the person who has diabetes. Moving toward a more physically active life is generally inexpensive, convenient, and easy and usually produces great rewards in terms of blood glucose control and a general feeling of well-being.
Whenever you actively use a muscle, you burn both fatty acids and glucose. During and after periods of activity, your falling glucose level is sensed by the beta cells in your pancreas, and they relax their output of insulin.
This gives your beta cells a break from excessive insulin production. In addition, the lower insulin levels signal your liver to empty its glucose reserves (glycogen) into the blood to supply the muscles with needed energy.