The HeartMath Solution outlines 10 steps for harnessing the power of the heart’s intelligence, including ways to manage your emotions and keep energy levels high. One of the most important is the “Freeze-Frame” technique for calming the nervous system, improving clarity of thought and perception, and boosting productivity (which is one of the many appealing features for those Fortune 500 companies). Each step includes references to data proving its effectiveness, with handy summaries of the key points to remember at the end of each chapter. This is a book that takes a bit of scientific understanding and a lot of time to wade through, but one that could help you prevent stress from ruling your existence. –Erica Jorgensen