Before a stress test, you’ll need to avoid food, drink, tobacco, and caffeine for a time. You may also have to stop taking some medications. Your doctor will provide information specific to you, but ...

A stress test measures how well your heart works when put under stress. It is ordered to assess exercise tolerance, see if your heart can respond to demands, or test if heart medications are working.

Dear Mayo Clinic: I have a treadmill stress test scheduled to look for heart disease. I know this involves exercising, and I'm worried that I'm not physically up to it. Is there another way to gather ...