"There's a breakthrough happening in the study of wellness and longevity. We know that excessive stress can be toxic, but emerging new research reveals that too little stress is just as bad for you as too much. ... In [this book, Dr. Bergquist] explains that our bodiesare designed to heal and repair themselves, but we need the right amount and type of stress to rejuvenate at a cellular level. Many modern comforts have inadvertently increased our risk of mental and physical illness by causing us to underutilize our inherited response to challenges. Our need for stress is so deeply embedded in our genesthat you can't achieve good health without it. Dr. Bergquist reveals how to optimize five key stressors to maximize mental, emotional, and physical resilience and reap a host of health benefits, from staving off dementia to increasing the years of your life"-- Provided by publisher.