Does walking, running or jumping cause you to have a tight chest, shortness of breath or wheezing? Do you often cough or wheeze after you’ve exercised. If the above statements sound familiar, you may have exercise-induced bronchoconstriction (EIB). This happens when the tubes that bring air into and out of your lungs narrow during exercise making it difficult to move air out of your lungs. What is exercise-induced bronchoconstriction? EIB is a temporary narrowing of the airways caused by strenuous exercise or activity. It may begin during exercise or after exercise has ended. Some people say it feels as if …