Excerpt from below Interesting Article (link in article doesn't work so I added one) ----->
... "thoughts or cognition, as brain activity, are revealed by MRI as visible tracings of light. Monitors show that the blood vessels deliver extra blood into that area of the brain right before the neurons fire. The heart-system knows, before the nerve-system thinks. HeartMath Institute research shows that connecting with heart-centered awareness sets up for measurable improvements in intuition and more."