I've had exercise induced asthma for pretty much as long as I can remember. It's a huge problem when I try running/jogging, but it usually doesn't both me much in cycling unless I really go all out for a sprint or if I stand up to power up a hill. Recently, I joined a spinning class, and while I'm fine for the majority of the time, the instructor will tell us to stand up and pedal hard and the asthma almost always kicks in. I used to use inhalers, but I don't like how they make me feel (increased heart rate, shaking hands, etc). I feel like I should be able to control the condition myself with breathing or the right warm up ... any suggestion? Does anyone else have the same problem? It's just really frustrating when I know that my legs are strong and can go for hours, but my lungs give out as soon as I make a big effort.