Came across this information awhile back, I find it both interesting as well as informative given the crazy times we find ourselves in. This is the first two chapters of the free e-book. I have put a link at the bottom to their site at the bottom of the post at my blog. This material is just another affirmation that we really never stop learning on this Earth, as long as we seek to learn. I hope you all enjoy it....

....HeartMath Institute (HMI) is an innovative nonprofit research and education organization that provides simple, user-friendly mental and emotion self-regulation tools and techniques that people of all ages and cultures can use in the moment to relieve stress and breakthrough to greater levels of personal balance, stability, creativity, intuitive insight and fulfillment.

HMI research has formed the foundation for training programs conducted around the world in many different types of populations, including major corporations, government and social-service agencies, all branches of the Armed Forces, schools and universities, hospitals and a wide range of health-care professionals. The tools and technologies developed at HMI offer hope for new, effective solutions to the many daunting problems that society currently faces, beginning with restoring balance and maximizing the potential within each of us.

HeartMath Institute’s Mission (HMI)
The mission of HeartMath Institute is to help people bring their physical, mental and emotional systems into balanced alignment with their heart’s intuitive guidance. This unfolds the path for becoming heart-empowered individuals who choose the way of love, which they demonstrate through compassionate care for the well-being of themselves, others and Planet Earth.

https://exploringrealhistory.blogspot.com/2021/12/science-of-heart-heart-brain.html