Kirk R. Parsley, M.D. is a former Navy SEAL, turned physician, turned physician for the SEALs, turned health optimization consultant, turned performance enhancement and optimization coach for the most performant humans on the planet. Dr. Parsley describes why sleep is the most underused performance enhancement tool available. He details his personal, clinical, and professional development into one of the world's most respected sleep improvement experts. This book will give you the understanding of how sleep affects all aspects of performance. Whether you are a shift worker, transcontinental pilot, first responder, military, entrepreneur, corporate executive, professional athlete, or a stay at home parent, we ALL have performance goals. This book describes how, when, where, and how much to sleep--in order to improve your performance in any area of your life. These techniques have helped A-list celebrities, physicians, teachers, professional athletes, and everyone in between. You will learn a step-by-step process to get the most performance and joy out of your life, while simultaneously reducing your risk of death and disease from all causes.