Numerous studies have proved that exercising regularly is an effective tool in controlling diabetes. However, if you have diabetes, you should measure your blood glucose levels twice before the workout: once one hour before starting the exercise at 30-minute intervals, and once every 30 minutes during exercise. However, each testing regimen should be individualized and discussed with your doctor. People with diabetes should start exercising 1-3 hours after eating, as that's when your blood sugar levels are higher.
If you are using insulin, you should always test your blood sugar before exercising and eat a piece of fruit if the numbers have dropped. Once your blood sugar level has stabilized, wait 30 minutes, and recheck your blood glucose level.
Try to aim for at least 150 minutes of moderate-intensity exercise every week. This would include any activity that raises your heart rate and makes you breathe faster and feel warmer.
It would also be a good idea to check your blood sugar after any particularly intense workout or activity. If you're taking insulin, the risk of developing hypoglycemia may be highest 6-12 hours after exercising. Remember that if your blood sugar is too high (over 250 mg/dL or 13.8 mmol/l), you should avoid exercising until you reach a normal range.