Yoga is a family of ancient spiritual practices that originated in India, where it remains a vibrant living tradition and is seen as a means to enlightenment. Karma Yoga, Bhakti Yoga, Jnana Yoga, and Raja Yoga are considered the four main yogas, but there are many other types.

In the West, yoga has become associated with the asanas (postures) of Hatha Yoga, which are popular as fitness exercises. Yoga as a means to enlightenment is central to Hinduism, Buddhism, Sikhism, and Jainism, and has influenced other religious and spiritual practices throughout the world.

Important Hindu texts establishing the basis for yoga include the Yoga Sutras of Patanjali, the Bhagavad Gita, and the Hatha Yoga Pradipika.

The word "yoga" – from the Sanskrit root yuj ("to yoke") – is generally translated as "union of the individual atma (loosely translated to mean soul) with Paramatma, the universal soul." This may be understood as union with the Divine by integration of body, mind, and spirit. Thus, in essence, one who attempts yoga may loosely be referred to as a yogi or in Sanskrit, a yogin (masculine) or yogini (feminine). These designations are actually intended for advanced practitioners , who have already made considerable progress along the path, towards yoga.