For more than 35 years, the Dutch yoga master Herth Van Leuen has been studying the work of the night light, exploring the patterns of back pain. As a result of long-term scientific research and extensive practice, a unique method of yogotherapy was developed, based on a deep understanding of human anatomy, physiology and psychology. This combination of theory and practice fundamentally distinguishes it from most of the author's styles of yoga. In Russian, the name of the method -Critical Alignment Yoga is translated as "Yoga of exact alignment."