No, I have asthma myself, it is definitely NOT contagious. The difference between a person's lungs with asthma is that when they are out if breath from physical activity, their lungs aren't able to inhale as strongly as a person without asthma's lungs. 1 fact is that asthma causes people to have more mucus in their lungs, which renders it hard to breathe. 2: You can either have asthma for a year or two or your entire life. 3: severe cases of asthma make the airway in your lungs narrow very tightly and will make you need a longer lasting inhaler. 4: the amount of asthma cases grows each year, this year there are 26 million people with asthma, and 18.9 million are adults and 7.1 million are children. 5: Asthma results in 439,00 hospitalizations and 1.8 million emergency room visits annually.
(what I'm trying to say is that asthma sucks)
Main reason I think is adrenaline.. gives you the strength to run from a traumatic event. fight or flight response. hope it helps
