Unplanned exercise

Sometimes exercise or physical exertion occurs spontaneously, so preparation isn't possible. You may need extra carbohydrate (or an adjustment in your medication, or both) at these times to make sure you have sufficient energy. A number of factors will determine what you need:

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• Snacks may be necessary for exercise beginning two hours or more after your last meal.
• You may need a snack if you exercise for an hour or more.
• Long-duration or all-day activities may require both a snack adjustment and an insulin or medication adjustment.
• If you are attempting to lose weight, adjust your insulin or medication rather than eating extra food.