Commuting to work can not only drain you, but it can be bad for your health — specifically your lungs. Researchers from the University of Southern California found that car commuters in high-traffic cities are exposed to up to almost half the air pollutants they encounter in one day during their drive to work, which only takes up six percent of their day. Because of this, it is recommended if you commute via car that you keep your windows rolled up and use the recirculating air feature. This will help minimize your exposure to pollution. A better solution would be to take mass transit (a train is better than a bus) or bike to work on streets with less traffic. How do you get to work?