Smiling slows the heart and relaxes the body. This lets the heart work without overworking. People who smile and laugh often are less likely to develop heart disease. Smiling also temporarily reduces blood pressure.
Stress is a common problem in the modern world that causes a myriad of health problems. Stress relief may be as simple as smiling a little more throughout the day. Smiling releases endorphins that counteract and diminish the stress hormones