I am 47 years old and have had exercised-induced asthma for about 15 years. I ususally control it by slowing down or limiting the exercise when breathing becomes difficult. The last 4 years cold weather has been a trigger. I had 2 terrible episodes last winter, once while coasting on the bicycle and the other while walking slowly in the cold. I only carry my inhaler when I am in a spinning class - where I push myself and when I cycle in unfamilar territory, otherwise I regulate my activities to control breathing.