An asthma episode is a short period when breathing becomes difficult, sometimes along with chest tightness, wheezing, and coughing. Exercise causes asthma attacks for some people.

Most people with asthma (about 80%) have asthma attacks during exercise. Some people have asthma symptoms only when they exercise. Both cases are called exercise-induced asthma.

• Shortness of breath may occur early in an exercise period. Some people get worse 5 to 10 minutes after exercise stops.
• Difficulty breathing usually goes away within 20 to 30 minutes after stopping exercise.
• For people with asthma symptoms during exercise, using asthma-controlling medication before exercise may help reduce symptoms, especially in cold, dry weather.

For more information, see the topic Asthma in Teens and Adults.