There are two main forms of the respective Yoga : Kundalini-Yoga and Laya-Kundalini-Yoga.
Laya-Yoga is based on an old meditation form with concentration on the energy centers or chakras. The Nepalese way Gorakshnatha, a student of Matsyendranath, is regarded as the founder of Laya Yoga.According to the theory exist five centers of energy in the spine and two centers in the head. Laya Yoga tries to locate them through meditation, and also to absorb images and words and channel the prana energies. The kundalini is subtly aroused and channeled and transformed by the chakras.