A successful life doesn't mean you have to experience chronic stress. Now, Dr. Gayatri Devi shows in A Calm Brain how you can cultivate an optimal mental and physical state of focused peaceful awareness by tapping into your body's hard-wired natural relaxation system. Our ancestors used the fight-or-flight mechanism to protect themselves from predators. We use it to fend off daily crises. In a world filled with too many toys, too much technology,...