Have you ever wondered what the science behind the HeartMath system is?

This insightful and comprehensive monograph provides fundamental and detailed summaries of HeartMath Institute’s many years of innovative research. It presents brief overviews of heart rate variability, resilience, coherence, heart-brain interactions, intuition and the scientific discoveries that shaped techniques developed to increase fulfillment and effectiveness.

You can view it online or download the Free PDF in English from their corporate website http://www.heartmath.org/soh