A clear, accessible guide to the anatomy underlying yoga practice that pairs detailed illustrations of bones, muscles, and joints with practical explanations of how breath and movement interact; it analyzes common poses to show which structures are engaged, offers alignment principles and modifications for safety and effectiveness, and emphasizes functional, individualized practice over rigid rules. It also explains breathing mechanics and the role of the respiratory system in movement and stability, making it a practical resource for teachers and students seeking to deepen biomechanical understanding and reduce injury risk.