Kundalini Yoga is specifically meant to raise the kundalini energy stored at the base of the spine. Kundalini literally means a lock in the hair of the beloved.
Prana is the Sanskrit term for vital life. It is a rough equivalent to the terms chi, ki and qui. Prana flows through a network of subtle channels called nadis.
Yin Yoga is a style of Yoga pioneered by Paul Grilley. The style incorporates Chinese theories of energy meridians with yogic and tantric philosophies of India.