In the practice of tantra and in particular in Laya yoga, great importance is attached to internal work with channels, winds and energy substances (nadi, prana, bindu). Mastery in energy management is the key that reveals deep layers of consciousness inaccessible by conventional sutra methods, revealing the luminous nature of the mind beyond duality. The principles of working with internal energy are set out in a special section of Laya Yoga - Shakti Yantra (Universe of Energy), in which Kundalini Yoga, Shat-chakra-yoga are its constituent parts, describing the highest levels of practice associated with the management and control of elements within the body.