chocolate have to concentration of high flavonoids. by flavonoids have to effect to cardiac muscle, protect oxidation, help to improve operation of blood vessels, reduce to trends of embolism, reduce to risk of creating thrombosis, reduce to high blood pressure and reduce to risk of heart disease. Also, chocolate to have minerals such as magnesium, phosphorus and potassium essential to function of system in body to have the body operate comport to be protect effect to body