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 not only mentioned in the Rigveda but also in the Upanishads, though it had most likely taken its form as a systematic study around the 5th and 6th centuries BCE, in India’s ascetic and  Śramaṇa movements. Yoga is not a religion, it is a way of living that ensures a healthy mind in a healthy body.