 You will also be asked to have cardiopulmonary exercise testing, also known as a stress test. The purpose of this test is to check your fitness level. During this test, you will pedal a stationary exercise bicycle. You will be asked to pedal at the same speed, as the difficulty is increased every minute. It will feel like you are pedaling up a hill that gets steeper and steeper. The test is stopped when you cannot pedal at the desired speed or you become too tired to pedal. 