A great book that not only provides knowledge but also serves as a motivational kick in the rear. I was always active and athletic in my youth and throughout a career in the Army. After retiring at 50, I felt my fitness level and overall well-being dropping precipitously. This book single handedly changed the way I viewed aging and got me back on track. Reader beware, this book is only valuable to you if you follow the rules… for the rest of your ( hopefully) long and prosperous life! RLTW!!