This cluster of papers explores the impact of resting heart rate on cardiovascular health, focusing on its association with various conditions such as coronary artery disease, heart failure, hypertension, and diabetes mellitus. The papers also investigate the use of Ivabradine, a selective If inhibitor, in managing stable angina and chronic heart failure by reducing heart rate. Additionally, they highlight the predictive value of resting heart rate for mortality and its role as a risk factor for cardiovascular diseases.