Cardiovascular diseases (CVDs) remain the leading cause of mortality worldwide, accounting for nearly one-third of global deaths. Following acute cardiac events such as myocardial infarction, coronary artery bypass grafting (CABG), heart failure exacerbations, and percutaneous coronary interventions (PCI), patients often experience reduced functional capacity, psychological distress, and diminished quality of life. Cardiac rehabilitation (CR) is a comprehensive, multidisciplinary intervention designed to improve cardiovascular health, enhance recovery, reduce recurrent cardiac events, and improve long-term outcomes. This review examines the role of cardiac rehabilitation in patient recovery, emphasizing exercise training, risk factor modification, psychological support, nutritional counseling, and technological innovations. Evidence indicates that participation in structured CR programs significantly improves exercise tolerance, cardiovascular function, psychosocial well-being, and survival while reducing hospital readmissions. Future developments integrating telemedicine, wearable technologies, and artificial intelligence may further enhance rehabilitation outcomes and accessibility.