Run in less polluted air

If you exercise outdoors, you’re vulnerable to toxins in the air. Learn how to gauge your city’s "pollution mood" and keep your exposure to a minimum.

Take action:
Avoid exercising near areas of heavy traffic; early morning and evening are generally the best times for outdoor exercise (get a group together if safety is a concern); still winter mornings, however, are often conducive to higher pollution levels – on such days, try exercising a little later in the day; wind and rain can help disperse and get rid of pollution, so post-rainstorm is a good time for outdoor activities; if you must exercise when pollution levels are high, decrease your workout’s duration or intensity and make up for it on a less polluted day.