As we count down the winter months, here’s another reason for the older folks among us to keep moving, even through the cold: exercise is one of the best options to prevent varicose veins and other circulatory issues in the legs.While you might have thought of varicose veins as an inevitable and purely cosmetic sign of aging — like going bald, graying and getting wrinkles — they are actually a common blood vessel disorder over which we have some control.