While a foundational concept in yoga, Kuṇḍalinī is also one of the most mysterious. Kuṇḍalinī is often described as a snake-like energy that lies coiled, sleeping at the base of the human body. Practices of yoga are intended to awaken Kuṇḍalinī, either to remove her blocking the central channel, or cause her to rise up through it. The rising of Kuṇḍalinī is considered a key technique of yoga, demarcating spiritual experiences and even facilitating the liberated practitioner to transcend their body. Yet this simple summary belies the varied ways in which Kuṇḍalinī is described and experienced across textual, cultural and contemporary accounts. This course sets out the history of Kuṇḍalinī as concept and experience—but cannot dispel the mystique.