Unless you can drive standing up, you are one of the millions of truckers who are at a higher risk of suffering from pulmonary embolism, or a blocked artery in the lungs.

This dangerous condition can result from long periods of inactivity, as it is most often caused by a blood clot in the leg. Truck drivers are particularly vulnerable, as long hours of sitting behind the wheel can prevent adequate blood circulation to the limbs.

Once a blood clot travels to the lungs, it causes the shortness of breath, sharp chest pain, and heart palpitations. All are associated with pulmonary embolism and can be fatal.

In addition to inactivity, other factors such as being overweight, smoking, having a pacemaker, being pregnant, using birth control pills, or having had surgery can put you at risk.

There are a few easy preventative measures you can take. Scheduling a break to walk every hour or so during your drive can help ward off blood clots in the legs. While you're maneuvering at the wheel, you can try to flex and rotate your ankles to help increase blood circulation. Before you leave for your road trip, drink lots of fluids, which can help prevent clot formation, and check with your doctor about taking a low dose of aspirin before getting in the driver's seat. If you're still worried, using support stockings while you're traveling isn't a bad idea, as they promote blood flow to your legs and feet. You should check with your doctor, but hopefully these health tips will help you breathe a little easier next time you're on the road.