There is research indicating that laughter helps blood circulate better and 21% which is good for the heart by people who laugh while watching comedy blood vessels to grow 1/5 as long as 24 hours.But when I see a movie documentary nak vessels back to 18% shrinkage, which may result in high blood pressure.As well as we feel happy. The body will secrete chemicals in the nervous system that makes it feel comfortable in a good mood, great body, therefore, should be to laugh every day, because in addition to the we will be happy.