Inclusion Criteria:  Ability to read and write Stabilization of vital signs [blood pressure, pulse, respiration) Patient undergoing OFF Pump Coronary Artery Bypass Graft (CABG) Procedure  Exclusion Criteria:  History of severe mental diseases resulting in hospitalization and drug treatment within the previous 6 months Use any kind of other complementary methods such as massage therapy, aromatherapy, etc. to treat sleep disorders for the previous two weeks History of sleep or respiration disorders and used CNS medications in the night.