Cooling and drying of the bronchial airways can trigger an asthma attack
Avoid strenuous exercise in cold dry air
Avoid winter sports, such as skiing, snowboarding, or ice-skating
Use the bronchodilator inhalers, 20 minutes prior to exercise
Keep the inhalers warm in order to avoid a cold aerosol spray
"Warm-up" and "cool-down" after strenuous exercise
When exercising in cold air, wear a scarf or facemask over the nose and mouth to warm the air one is breathing
Drink plenty of liquids before and after exercise to prevent drying of the airways
Exercise indoors when outdoor temperatures drop