As part of a teaching plan in preparation for discharge, a patient with type 1 diabetes needs guidelines for exercise. Which guideline should be included?

A. Keep exercise at a minimum to conserve your energy: Limiting activity is not routinely advised; exercise is encouraged for glucose control unless individualized contraindications exist. B. Exercise should be performed daily at the same time of day and at the same intensity: Consistency in timing and intensity makes blood-glucose responses more predictable and helps match insulin dosing to activity. C. Insulin should be injected into the lower extremity before exercise because that site provides the greatest absorption: Injecting into a limb that will be exercised increases absorption and the risk of hypoglycemia; avoiding injection into an exercising muscle is recommended. D. Plan exercise so that it coincides with the peak action of insulin: Exercising at an insulin peak raises the risk of hypoglycemia and is generally not recommended without dose/food adjustments.