Marino suggests having a podiatrist groom diabetic feet. Warming up and stretching before starting can help avoid injury. A cool-down time is necessary, too. Drink plenty of fluids. Bring water or another beverage along, and be sure to have a snack containing sugar - hard candy, orange juice, a piece of dried fruit.
Raisins are excellent for raising blood glucose when necessary.
For those who have mobility impairment, there are chair exercises. One morning TV program features these. Never exercise immediately before a meal. Your blood sugar' s lower anyway, and could drop dangerously. An hour or so after a meal is a good time for physical activity.