Chhath Puja is a four-day festival dedicated to the Sun God and Chhathi Maiya, rooted in ancient traditions and associated with the Ramayana and Mahabharata. Beyond its religious significance, the festival reflects a close connection between nature, science and human well-being. Traditional practices such as fasting promote dietary discipline, while sunrise and sunset prayers highlight the importance of the body's natural circadian rhythm and sunlight exposure.