Have you done something "kind" lately, maybe a random act of kindness? Studies have shown that a simple act of kindness directed toward another improves function of the immune system and stimulates the production of serotonin in both the person who did the act of kindness and in the recipient. Persons overseeing the act of kindness experience similar beneficial results. Serotonin is a naturally occurring substance in the brain and body. It helps you to feel peaceful and more comfortable. What an easy way to get a shot of serotonin!