Inclusion Criteria:  age between 35 to 60 years. With a clinical diagnosis of coronary artery disease, underwent elective CABG (Acute)  Exclusion Criteria:  Low ejection friction (15%) Patient those who have any arrhythmias Unstable angina Patient having pace maker and implantable cardioverter defibrillator COPD and asthmatic patient Patient having BMI more then 40