Are there any risks to the test? Stress tests are usually safe. Sometimes exercise or the medicine that increases your heart rate can cause symptoms such as chest pain, dizziness, or nausea. You will be monitored closely throAre there any risks to the test? Stress tests are usually safe. Sometimes exercise or the medicine that increases your heart rate can cause symptoms such as chest pain, dizziness, or nausea. You will be monitored closely throughout the test to reduce your risk of complications or to quickly treat any health problemsughout the test to reduce your risk of complications or to quickly treat any health problems