There is a Science of the Heart that is being researched more and more intensively. The following article is from www.mindfulmuscle.com and was co-authored by three scientists (see below).
After this article, under Additional Materials you will find some interesting links as well as a very simple HeartMath exercise – the “Touch-Heart Exercise” – that creates Heart Coherency. It consists of three parts and is suitable to do with any group when you want to create a heart resonant field.
“The Heart Has Its Own “Brain” and Consciousness”