Asthma is a disorder characterized by inflammation of the lungs and the airways. As it causes the airways to swell, it reduces the amount of air that enters as the muscles from the tract usually become tight, thereby causing shortness of breath, bough and even wheezing. In different people, asthma can be triggered by 1 or more variable factors to varying degrees, such as dust, animal fur, pollen or change in weather, mold, stress (physical or psychological), respiratory infections, smoke or even exercise. Some of these cases are genetic and usually run in families, while some may be triggered by certain common drugs. While each person and has response to these stressors is different, if regulated the right way, t is very much possible for a person with asthma to carry on the daily routine activities, including regular exercise.