The Five Tibetan Rites is a system of exercises reported to be more than 2,500 years old which were first publicized by Peter Kelder in a 1939 publication titled The Eye of Revelation. The Rites are said to be a form of Tibetan yoga similar to the yoga series that originated in India. However, the Five Rites and traditional Tibetan yoga both emphasize "a continuous sequence of movement" (Sanskrit: vinyasa), whereas Indian forms focus on "static positions". Although the Rites have circulated amongst yogis for decades, skeptics say that Tibetans have never recognized them as being authentic Tibetan practices.