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How Exercise Helps continued...

Physical activity burns both blood sugar and sugar stored in muscle and the liver. If you use insulin or other diabetes medicines, you should closely watch your blood sugar levels when you start exercising. Over time, as you exercise regularly and work with your doctor, you may be able to lower doses of medications and insulin.

Each type of exercise affects blood sugar differently.

Aerobic exercise -- running or a treadmill workout -- can lower your blood sugar immediately.

Weightlifting or working out hard for a long time may affect your blood sugar level many hours later. This can be a problem, especially if you're driving a car after your workout. It's one of the many reasons you should check your blood sugar before you get behind the wheel. It's also a good idea to carry snacks like fruit, crackers, juice, and soda.