Some years ago I was introduced to the work of the HeartMath Institute. They have found that not only does the heart have it's own intelligence it communicates with the brain in our head and directs our emotions. It has been known for many years that emotions play a major part in affecting our physiology and long term negative emotions can lead to ill health.
In this video the Heartmath founders describe their computer programs which can help people to release stress and create coherent (healthy) heart patterns in minutes. Their research is fascinating as it makes scientific sense of the language we commonly use around the heart...follow your heart (suggests we already know the heart has it's own intelligence), broken hearted (suggests we already know that the heart's physiology is altered/damaged by emotional stress).
The Energy Clearing process I practice on my clients has a similar effect (but without the computer). www.energyclearing.co.uk