Exercise induced asthma symptoms may occur shortly after a brief episode of exercise or 10 to 15 minutes into a longer period of physical activity. Symptoms typically resolve with rest in no more than 30 to 60 minutes.
Symptoms of exercise induced asthma occur more commonly and are more severe in cold weather.
Sources:
O'Byrne, Paul. Patient Information. Accessed May 5, 2009. Exercise Induced Asthma
Storms WW. Accessed May 22, 2009. Asthma Associated With Exercise. Immunol Allergy Clin North Am. 2005 Feb;25(1):31-43.

