I've read dozens of running books and most are entertaining but largely full of training advice built on opinion and the personal experience of the author. This book takes a different approach and attempts to gather all the scientific knowledge around endurance sports, specifically running into one large very comprehensive collection of knowledge. It's definitely not a traditional running book, but before you disregard it as a dry read, or not appealing to the non-professional athlete you should give it a serious look. After two and a half years of running this book has given me the answers to a lot of questions around training that other sources have only offered mildly successful opinion on. It has given me the confidence to write my own training plan for my next marathon rather than follow one prescribed by some generic plan. The book covers everything from injuries, to psychological aspects of running, training plans, strength training, recovery and all the nitty gritty science behind muscles, lactate, periodization and speed training. There are chapters on everything from short distance track racing to ultra-marathons. Honestly this book, or one like it, should live on all runners book shelves.