I just read an article by Joe Kita in the Reader's Digest that my uncle gave me. It was titled "What If You Said Hello to Everyone in Your Path for a Month?" I just found that article on the web and have attached a link to the title.
The article listed the benefits of saying hello to people. It also mentioned that "smiling has been clinically shown to lower blood pressure, boost immunity, and even release natural painkillers (endorphins), each of which lowers stress, boosts happiness, and improves health."
I told Art about this and when we went out for our walk yesterday, I made a conscious effort to stop and say, "Hello" to everybody I saw on our walk. It was really wonderful! Everyone was happy to be greeted and we even got invited to go to a Buddhist temple which we may very well go and try out.
The nicest thing of all was when we got home, Art and I both felt exhilarated and happy. I believe people are open to kindness and friendliness if you just take that first little smiling step and say, "Hello."