As Chhath Puja 2025 begins today, millions of devotees across India and Nepal are preparing for one of the most rigorous fasting rituals in Hindu tradition, a 36-hour waterless fast, also called Nirjala Vrat . Observed during the festival, this fast involves abstaining from both food and water from sunrise to sunset, culminating in the evening Arghya (offering) to the setting Sun. This act of devotion is believed to purify the body and soul while expressing gratitude to Surya Dev and Chhathi Maiya .

How y our bo dy re sponds to a 36- h our wa terless f ast

Going without food and water for 36 hours has a significant impact on the body. Initially, the body relies on stored glycogen for energy, which can lower blood sugar levels and trigger

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