If taking your dog out for a walk or getting up the stairs feels harder than normal, your doctor may order something called a stress test. And the process is a bit different than you might expect ...

The process is similar to that of the exercise stress test, but the doctor will inject a tracer dye into the arm to highlight the heart and blood flow on an image. The dye will also show any areas ...

A nuclear stress test includes imaging that shows blood flow to your heart during the test. Some stress tests have you exercise on a treadmill or bike to elevate your heart rate.

A chemical stress test can simulate the heart's response to exercise. Learn more about who can benefit from a chemical stress test and what this test involves.