Exercising Outdoors Could Increase Air Pollution Exposure
When you exercise, your respiration rate increases. People who exercise outdoors might have greater air pollution exposure. This is especially true for those who work out near high-traffic areas.
If your indoor air quality is better than the outdoor air quality in your area, you are breathing in more pollutants by being outside. This can make working out indoors safer.
However, if you must exercise outdoors, choosing the right time of day is important. If you can get outside before most commuters hit the road, the air quality may be better. Going to a park or other natural space can also help.