I'm 23, its real mild, it never bothered me my entire life until a couple of years ago I had 1 big panic attack and I was a little depressed but never before or never after has it really bothered me that much. Other then that I have no medical conditions that I'm aware of. Actually maybe mild asthma, but it doesn't slow me down at all and I don't need medicine for it or anything like that, I never even really notice it....

(I really need to get big for my career)