There are many, well-written anatomy books that basically describe what muscles are being engaged in each posture. What makes this text unique and an essential guide to asana practice is that it goes beyond simply naming parts to present clear and concise principles for how the body correctly moves and aligns.
This book supports all styles of yoga and all levels of practice. It provides insightful tips and answers to many questions that arise for both teachers and students alike. Its concepts are user-friendly and presented from yoga's point of view.
Alignment allows your practice to advance and go deeper while avoiding injury. And, alignment is the basis of yoga as therapy for existing injuries. Practicing with good alignment enables yoga to deliver on its promise of being a system of health, vitality, and restoration. This is the ideal book for yoga teacher trainings. It will become your primary, "go-to" resource for asana-related questions. As a teacher, you will have confidence that your adive is anatomically correct and will enhance the student's practice. As the student or practitoner, know that your time on the mat will be therapeutic and structured to avoid injuries.