After the successful books by Ray Long, "Yoga Anatomy 3D: The Most Important Muscles" and "Yoga Anatomy 3D: The Postures", there are now 4 more volumes dedicated to all asanas. The volumes are yoga style comprehensive and work according to the modular principle. Each volume focuses on one group of asanas. The basic principle describes the biomechanical and physiological principles and their application in the postures. Finally, the individual postures are illustrated with colourful, three-dimensional illustrations of the skeleton and the most important muscles, ligaments and tendons. In addition, a list of movements and muscles is provided. Volume I deals with Vinyasa Flow (dynamic yoga style) and the postures. Volume II deals with the hip openers and bending forward. Volume III deals with the backbends and turning postures and Volume I.