During a TMT procedure, you will be asked to walk or run on a treadmill while connected to an ECG machine. The speed and incline of the treadmill will gradually increase, simulating an exercise challenge. Your blood pressure, heart rate, and ECG will be continuously monitored throughout the test. The healthcare provider will observe your heart's response to exercise, looking for any changes in heart rhythm, blood pressure, or the appearance of symptoms such as chest pain or shortness of breath. The test typically lasts around 10-15 minutes, but the duration may vary depending on your specific situation.