An estimated 300 million people worldwide suffer from asthma, according to the World Health Organization. Some of these people only experience symptoms when exercising. If you cough, wheeze, have a tight chest or shortness of breath when you exercise, then you may have exercise-induced asthma or exercise induced bronchoconstriction (EIB). In people with EIB, the tubes that bring air into and out of your lungs narrow with exercise, causing symptoms of asthma.

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