To avoid blood clots on long flights, remind patients to: Exercise (stand up, move your feet and legs; Ask their health-care provider about taking aspirin or other clot-preventing medication; Avoid dehydration (drink plenty of fluids, avoid alcoholic beverages); compression Stockings will help blood flow; Your life may depend on it.—LAURA C. CHAN, RN, MSN, NP-BC, Pooler, Ga. (146-21)