Laugh is more than visual and vocal behave, is always followed by a series of physiological changes, including contractions of musculoskeletal system, increase of cardiac frequency by catecholamine release and hyperventilation that promoves the increase of maximum breathing and oxygen saturation. Laugh therapy may be an alternative therapy, simple, and improve the quality of life of individuals can influence physiological and biochemical parameters of the human body.

Methods: Randomized clinical trial with patients from outpatient ischemic heart disease of the Hospital de Clínicas de Porto Alegre , patients of both sexes in all regular monitoring. All patients will perform 30 minutes of stretching before film sessions. The exercises will be mild to moderate (modified Borg scale between 3 and 6).

Inclusion Criteria:

• ischemic heart disease diagnosis established by cardiac catheterization, with 50% lesion in at least one epicardial vessel (if the patient has had an acute coronary syndrome or have been revascularized, the event time is expected to exceed 6 months).
• Both sexes
• With availability to come to HCPA twice a week
• In conditions of entering into a cardiac rehabilitation program with exercise.

Exclusion Criteria:

• Involvement in another clinical trial.
• Presence of autoimmune disease
• Use of oral anticoagulant
• Valvulopathy with mechanical or biological cardiac prosthesis
• Presence pacemaker or implantable cardioverter
• Left bundle branch block in 12-lead ECG
• severe lung disease
• Major Depression or Bipolar Disorder
• Chronic Atrial Fibrillation
• Left ventricular dysfunction (ejection fraction <45%)
• Active infection or cancer (other than basal cell carcinoma)
• Chronic Renal Failure
• Illiteracy
• Inability to understand the consent form