Exercise is a common trigger for many people with asthma. This is called exercise-induced bronchoconstriction or EIB. But living with EIB doesn't mean you need to give up exercise.
When you have asthma, exercise can make you breathe faster. This may cause asthma symptoms or an asthma attack.
Exercise-induced bronchoconstriction is a sudden narrowing of the airways when you exercise. Exercise can make symptoms worse in most people who have asthma.