I've been starting to worry about my breathing. I'm a 20 year old male, who excercises 3 times a week. I've never had this problem in my younger years it seems to have just happened to me. I'm constantly having to take deep breaths/yawns. I'll yawn or take a deep breath, and moments later I'll feel like I have to do it again. When I get to the point where I feel a yawn coming or deep breath, as soon as I try, the feeling goes away and it gets very irritating and annoying. On some days I wake up and feel normal all day, other days I'll experience this feeling all day. Is this some kind of warning that I might have Asthma? Or could it be anxiety? Is this something serious to be worried about?