Building defects such as a low neck set, backwardness, or a swayback can be inherited, but they can also arise or be exacerbated by unfavorable training. Therefore, the exterior can be positively or negatively altered. In this book, riders will learn to assess the exterior of their horse and to recognize both good development and warning signs. The authors explain the anatomical foundations behind terms like steep shoulder or high neck set and provide tips on how to train horses with specific exterior traits to develop optimally within their capabilities.