From the Elephant Journal:
By now, most of us have heard the news: grateful people are happier, healthier and generally more fulfilled.
And while these are all really great side effects of gratitude, for me, one of the coolest things about gratitude is the way it affects the heart. The heart creates an electromagnetic field that expands up to five feet from the body. Its electrical field is 60 times stronger in amplitude than that of the brain.
Studies show that when people cultivate positive feelings, the heart’s frequency changes and its waves become smoother and more consistent, while anxiety or stress caused waves to be shorter and less organized. Though most positive feelings were capable of affecting the heart in this way, researchers noted that gratitude changed the heart’s rhythm more easily and faster than any of the others.