Your doctor might recommend specific exercises to reduce pain or build strength. Depending on your condition, you might also need to avoid certain exercises altogether or during flare-ups. In some cases, you might need to consult a physical or occupational therapist before starting to exercise.
If you have low back pain, for example, you might choose low-impact aerobic activities, such as walking and swimming. These types of activities won't strain or jolt your back.
If you have exercise-induced asthma, you might choose activities that involve short bursts of activity — such as tennis or baseball. If you use an inhaler, be sure to keep it handy while you exercise.
If you have arthritis, the exercises that are best for you will depend on the type of arthritis and which joints are involved. Work with your doctor or a physical therapist to create an exercise plan that will give you the most benefit with the least aggravation on your joints.