Excellent book for advanced practitioners. German work. Co-written with Anna Trökes the German benchmark for yoga, well known in his country, who has written many books, very focused on accessibility and back problems. Each posture is approached from different angles: the symbolic / mythology, felt fact, the physiological aspect and decision posture concretely with photos. The main bandhas are discussed very very very clearly (and for good) with scheme and broad practice pranayama. Modern Yoga close to the vein of yoga Energy and the school of Madras.