Clinical Exercise Testing is remarkable in that it accomplishes seemingly conflicting, yet equally important, goals. It is both an authoritative resource on a number of important subjects, and yet it is eminently readable. It is authoritative, because each chapter stands alone as a comprehensive reference on its own particular subject, written by seminal investigators in the field; at the same time, it never departs from an integrated presentation of the entire discipline. Its readability was apparent when, despite my inclination to skip over certain chapters of less apparent interest to me, I found them too engrossing to do so. The book is additionally remarkable in providing state-of-the-art information on clinical aspects of exercise testing that hold great promise, such as the use of tidal flow-volume loops to evaluate limitations of ventilatory capacity, and exercise testing in evaluation and follow-up of heart and lung transplants and lung resection. Moreover, this information is presented in a clear, practical manner.