- Reading the title you may think that the method is complicated, out this is quite the opposite. It's a cinch and the results simply bluffing. - If there is a book you must read to understand and master heart coherence, it is this one. It gives you the theory and all the elements necessary to the practice of cardiac coherence. I myself practice this technique by using the author's method. There are good and I emphasize the above a before and after when practicing this technique. It's amazing, believe me, and practice, you too will understand what I mean and you will be convinced. When we see and we saw the result, there is something seriously wonder why it is not taught to everyone and especially children to school for everyone to enjoy a more pleasant life possible . - Thanks to the author who is a humanist in the best sense of the term.