What is an Exercise Tolerance Test (ETT)? The Exercise Tolerance Test, also known as a treadmill test or stress test, monitors the heart’s activity under physical stress. It helps detect issues like coronary artery disease, irregular heart rhythms, and other heart-related concerns. ETT Procedure  Preparation: Wear comfortable clothing and walking shoes. Avoid eating or drinking large meals two hours before the test. Inform the technician about any medications you are taking. Electrode Placeme...