Gradually work up your desired level
Whether you are just starting or are in the midst of a exercise routine you will want to gradually build up to the level of activity you want. Gradually building up your endurance is good for your body as well as your asthma. As your body gets used to the activity that you are doing your asthma symptoms will lessen. This will also help strengthen your lungs. Begin your work outs on a more minimal level such as speed walking and light aerobics. Start this out every other day, or just two or three days a week. When you feel comfortable with this and are not having any difficulty breathing then add an extra day or ten more minutes to your work out. If you need your rescue inhaler more than once during a workout you need to cut it back a little. In medical terms you should not need to use your inhaler more than two or three times in a week. If your asthma is moderate to severe be sure that you are on a daily preventative medication before you start an exercise regime of any kind.

Be selective in the types of exercise you do.
You should make sure that the kind of exercise that you participate in is not too advanced or likely to agitate you asthma. If you haven't been working out recently try starting with a yoga class. This is something that you can do and progress at your own pace. If you jump right into an aerobics class when you haven't been exercising regularly you may find it causes you to have breathing problems and that you have difficulty keeping up. Try something that you feel matches your level of ability in your current state of health.

Let your body set the pace.
Every asthmatic knows that the more your asthma flares up, the more often you are susceptible of severe symptoms. In turn the longer you go without symptoms the better. When you seem to be having a lot of problems with your breathing easing up in your exercise routine may be necessary. If you find that your asthma is aggravated by your workout lessen it somewhat to a more comfortable pace. Change your workout to something a little more relaxed. Keeping active is important, and light to slightly moderate problems with your asthma should not keep you from working in some way. You may want to take a break from exercising for a few days if you are experiencing very moderate to severe symptoms. Your workout is important, but not quite as important as keeping your asthma under control.

Always remember that exercise is a great way to help control your asthma symptoms and strengthen your lungs as well as your body. You should always workout in a gradual pattern working up your endurance and to the level of ability you want. Listen to your body and let it help you decide on your exercise pace. Working out with asthma can be just as rewarding as it is for any other person that doesn't have asthma.