Methods: Patients will be randomly assigned into three groups: Group A will receive usual care, Group B will receive usual care in addition to aerobic exercise, and Group C will receive usual care in addition to resistance exercise. both the aerobic exercise group and the resistance exercise group will be guided by wearable artificial intelligence ECG monitors for real-time support and guidance, and they will stop exercise when any adverse events occur. Exercises will be started early from post operative CABG until patients discharge and measurements will be taken at baseline and before discharge