Interviewer: What is one of the hardest things for you about having asthma?

Billy: It's hard to go outside when it's cold because you have to dress in a lot of layers. Like when I go sledding, I have to dress in two layers of clothes and a raincoat, because if I get too wet, I'll get sick, and then if I go inside with dry air, I'll just have an asthma attack and start coughing.