I'm surprised to see so many people with asthma that are riders. I have asthma also and have had it since I was about 7 (34 now). I usually get exercise induced asthma attacks but I'm also allergic to cats and dust and some pollens. I take Claritin to keep my allergies in check and to keep them from sparking an asthma attack. I've always used a rescue inhaler(albuterol) and it will increase your heart rate. Don't use your rescue inhaler too often in a short time as it can become dangerous for your heart. I've read of several people who have died from over-using their rescue inhalers. Aside from that, I've used so many different other inhalers to manage my asthma. I've been on beclovent, serovent and singulair. The only one that has worked for me really well is Advair which is a combo of beclovent and serovent or fluticasone and salmiterol. I take the Advair generic Seroflo that I get from India because it's too expensive in the US. Since using Advair, I use my rescue inhaler about once a month compared to once a day before taking Advair. I still can't go all out like sprinting without wheezing but at least it's manageable and I've learned to live with it. And my asthma hasn't stopped me which is most important.