The TMT (Treadmill Test) assesses heart function during physical stress. It helps detect coronary artery disease by monitoring ECG changes while the patient walks on a treadmill. The procedure involves attaching electrodes to the chest to record heart activity as treadmill speed and incline gradually increase. A normal result shows no ECG abnormalities, chest pain, or significant blood pressure changes. Abnormal results may suggest reduced blood flow to the heart. The test usually lasts 30–45 minutes. In India, the cost ranges from ₹1,000 to ₹3,000. TMT is safe, non-invasive, and essential for evaluating exercise tolerance and heart health.