Don’t avoid exercising because it may trigger an asthma attack. Exercise is very beneficial for you, and you can find ways to exercise without triggering attacks. Warming up prior to exercise may prevent attacks.
Ask your doctor whether you should take inhaled medication before you start exercising. And if you are allergic to pollen, you may need to avoid exercising outdoors. You may have to avoid exercising if you have a viral infection, such as a cold.