Yoga is an ancient philosophy of Indian life as well as a system of exercises that encourages the union of mind, body, and spirit. Yoga has been defined as referring to technologies or disciplines of asceticism and meditation which are thought to lead to spiritual experience and profound understanding or insight into the nature of existence. Yoga both tones the respiratory system and helps you to breathe more fully, deeply and easily, which in turn, will improve your physical and mental well-being, the efficiency of your body systems, aiding digestion, the assimilation of nutrients and the elimination of toxins. The references to Indian Yoga are available in Upanishads, Puranas, Bhagavad Gita, Yoga Sutras of Patanjali, the Hatha Yoga Pradipika, the Shiva Samhita, and many others. Outside India, Yoga is generally considered as the practice of asanas (postures) of Hatha Yoga or as a form of exercise. Indian Yoga has influenced not only the Indian family but also the entire world.