Yoga is a group of physical, mental, and spiritual practices or disciplines which originated in ancient India. Yoga is one of the six Āstika (orthodox) schools of Hindu philosophical traditions.There is a broad variety of yoga schools, practices, and goals in Hinduism, Buddhism, and Jainism.The term "Yoga" in the Western world often denotes a modern form of hatha yoga and yoga as exercise, consisting largely of the postures or asanas.The practice of yoga has been thought to date back to pre-vedic Indian traditions; possibly in the Indus valley civilization around 3000 BCE. Yoga is mentioned in the Rigveda, and also referenced in the Upanishads. Although, yoga most likely developed as a systematic study around the 5th and 6th centuries BCE, in ancient India's ascetic and śramaṇa movements.The chronology of earliest texts describing yoga-practices is unclear, varyingly credited to the Upanishads.The Yoga Sutras of Patanjali date from the 2nd century BCE, and gained prominence in the west in the 20th century after being first introduced by Swami Vivekananda. Hatha yoga texts began to emerge sometime between the 9th and 11th century with origins in tantra.Yoga gurus from India later introduced yoga to the West, following the success of Swami Vivekananda in the late 19th and early 20th century with his adaptation of yoga tradition, excluding asanas.Outside India, it has developed into a posture-based physical fitness, stress-relief and relaxation technique.Yoga in Indian traditions, however, is more than physical exercise; it has a meditative and spiritual core.One of the six major orthodox schools of Hinduism is also called Yoga, which has its own epistemology, ontology and metaphysics, and is closely related to Hindu Samkhya philosophy.The Sanskrit noun is derived from the sanskrit root to attach, join, harness, yoke".The word yoga is cognate with English "yoke".[In the context of yoga sutras, the word Yoga means Union.The spiritual sense of the word yoga first arises in Epic Sanskrit, in the second half of the 1st millennium BCE, and is associated with the philosophical system presented in the Yoga Sutras of Patanjali, with the chief aim of "uniting" the human spirit with the Divine spirit. The term kriyāyoga has a technical meaning in the Yoga Sutras, designating the "practical" aspects of the philosophy, i.e. the "union with the supreme" due to performance of duties in everyday life.According to Pāṇini, the term yoga can be derived from either of two roots, yujir yoga (to yoke) or yuj samādhau ("to concentrate").In the context of the Yoga Sutras of Patanjali, the root yuj samādhau (to concentrate) is considered by traditional commentators as the correct etymology.In accordance with Pāṇini, Vyasa who wrote the first commentary on the Yoga Sutras, states that yoga means samādhi (concentration).According to Dasgupta, the term yoga can be derived from either of two roots, yujir yoga ("to yoke") or yuj samādhau ("to concentrate").Someone who practices yoga or follows the yoga philosophy with a high level of commitment is called a yogi (may be applied to a man or a woman) or yogini (a woman). #Yoga step in Home #Immunity level #Lock-down times #Health T