It is normal with strenuous activity. Breathing heavily may or may not make the person feel better. Doctors often ask about several things when a person has shortness of breath. Other causes are also possible. In some cases, the cause cannot be found.
Prevention depends on the cause.
For example, avoiding strenuous activity can prevent shortness of breath. Many cases of shortness of breath from asthma , congestive heart failure , and panic disorders can be prevented by taking medications regularly. Many cases cannot be prevented. Diagnosis of the cause of shortness of breath begins with a history and physical exam. This may be all that is needed.