I was diagnosed with some variants of asthma decades ago--exercised induced asthma and asthma induced by respiratory infections. I was prescribed brochial dilators, but they made my heart race terribly and, when my aneurysm was discovered, it became apparent that a racing heart was NOT good for me--worse than coughing again and again due to exercise or after getting over a "chest cold". I just stopped using the bronchiodilators and just tried to slow down, stop aerobics, and get medical help every time I had a bad cold. Breathing humidified air can help in the winter.
I know someone on this list will say I need to see the doctor (again? again? again?) but I will tell you that I still get winded climbing inclines (as in going into every building I work in). I am MUCH better than I was before my AVR replacement surgery. I do not have to carry a cane to lean on when I walk up inclines anymore, for instance, but my "exercise induced asthma" comes back when I exert myself too much. The physical therapist at Hopkins noticed how I held my arms as I walked and said I seem to have asthma. She did not hold me to the standards of other people recovering from OHS there. Of course, at 61 with major problems with loose connective tissue in my knees, hips and lower back, I am not held to the same standards as a 21 year old would be, ha ha!
So, if you really find help with asthma, let me know. Otherwise, I would say do not expect the same standards that non-asthmatics in your exerction.