For nine days of Chaitra Navaratri, people in India observe a strict vrat or upvas, eating only sattvic vegetarian food. Vrat or upvas is observed during Navaratri for spiritual reasons. By fasting for nine days, one can detoxify not only the body but also the mind. The mainstay of the Navaratri diet includes fruits, vegetables, milk and unsweetened beverages. If you observe the fast correctly, these are some of the health benefits you can reap.