I suffer from problem in breathing whenever there is a season change. Also when i start working out (aerobics at home or walk or badminton), i start having breathing problem within a week so i have to discontinue doing them. I've consulted doctors but they say it is not asthma. They say it is because of stress but even during the days when I'm not stressed, i encounter the same problem. I catch cold sometimes but most of the times when i have this breathing problem, i am not suffering from cold.