With routine cardiorespiratory exercises specific diseases/disorders can be prevented or better managed which include, diabetes type 2; hypertension; high cholesterol; reduced lung expansion can also get better by exercises.
D)Risk behavior can harm your health
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)
Risks can accumulate over time through exposure to different things over life which is a normal part of life generally. People who do a lot of crazy things are people who are more prone to having different kinds of risks being brought upon them. If you're working as a construction, it's more likely with time that you will suffer from some sort of work-related accident than someone who works in an office all day long.