The exercise stress test is an important diagnostic tool for the evaluation and management of various cardiac conditions. Its primary applications include: initial assessment in patients presenting with suspected coronary artery disease or chest pain; objective determination of the patient's exercise capacity; monitoring disease progression after myocardial infarction; evaluating the blood pressure response to exertion in cases of hypertension with an unknown cause; elucidating the relationship between cardiac arrhythmias and physical exertion; regular follow-up and periodic evaluation of individuals at cardiac risk; and monitoring the status of patients who have undergone coronary stenting or bypass surgery. This test plays a critical role in identifying existing cardiac problems and guiding patients towards appropriate treatment.