People who spend a lot of time outdoors or suffer from lung diseases are at greater risk because of ozone. It is possible to avoid or reduce unhealthy exposure to ozone. The more time you spend outdoors, the more are the chances that you will be affected by ozone. You can try to avoid this influence, fro example changing the exertion of your activity from heavy to moderate one. It is also possible to plan activities outdoors in the morning or in the evening because ozone levels are lower at that time.