Check your blood sugar before you exercise. Also, check it during exercise if you're working out for more than 45 minutes.
Check your blood sugar again right after exercise, and later on. Exercise can cause your blood sugar to drop for up to 12 hours after you are done.
If you use insulin, ask your doctor when you should eat before you exercise. Also, find out how to adjust your dose when you exercise.
Do not inject insulin in a part of your body that you are exercising.
Keep a snack nearby that can raise your blood sugar quickly. Examples are:
- 5 or 6 small hard candies
- 1 tablespoon of sugar, plain or dissolved in water
- 1 tablespoon of honey or syrup
- 3 or 4 glucose tablets
- 1/2 can of regular, non-diet soda
- 1/2 cup (4 ounces) of fruit juice
Have a larger snack if you will be exercising more than usual. You can also have more frequent snacks. You may need to adjust your medicine if you are planning unusual exercise.
If exercise frequently causes your blood sugar to be low, talk with your doctor. You may need to lower the dose of your medicine.