how does the Breath of Fire improve breathing, and does it help with forms of asthma?

[Adrellis]

I've never gotten a full diagnosis on what kind of asthma or what the cause is, but I've had it since middle school, and it's mostly triggered by activity. I was hoping this would help me out spiritually but also with the breathing, because I have trouble working out due to it (and I feel we're approaching a time where being fit is important). But it's breathing, it's just quick breathing, and it's not much breathing..and I have no idea if or how it'll help.

"Life is in the breath," that's why I have started doing it anyways.