Interesting. Stress in a killer. You have to have some stress so you can know when you are streefree. I have read that a two year old can experience great stress over trying something new , that they cant quite do , like tying showlaces.Our poor old hearts take the brunt of what we do , if it is stress, being over weight or what have you. A great nights sleep can conteract a lot of stress as I think we are more prone to get stress when we are running on empty.