Answer

A person may do Chauvihar Upvas for one day or multiple days, depending on their health, capacity, discipline, and guidance.

In Jain practice, common forms include:

• 1 day Chauvihar Upvas
• 2 or more days of continuous Upvas
• Atthai — 8 days of fasting
• Masakshaman — around 30 days of fasting
• Longer tapas may be undertaken by highly disciplined and properly guided practitioners

Explanation

Chauvihar means giving up all four types of intake:

• Food
• Water
• Mukhvas or taste items
• Any edible or drinkable substance

So, in a Chauvihar Upvas, one avoids both food and water for the fasting period.

Traditionally, an Upvas is usually observed from after the previous day’s meal until the next day’s proper breaking of the fast, often after sunrise and according to Jain rules.

Important Guidance

One should not attempt long Chauvihar Upvas without:

• Proper religious guidance
• Awareness of one’s physical health
• Permission or advice from elders, Guru Bhagwant, or knowledgeable Jain practitioners
• Careful and proper parna — breaking the fast

Long fasting is respected in Jain Dharma, but it should be done with right faith, right intention, humility, and health awareness, not ego or competition.

Spiritual Understanding

The purpose of Chauvihar Upvas is not merely to avoid food and water. Its deeper aim is:

• Reducing attachment to the body
• Controlling desires
• Practicing self-discipline
• Increasing awareness of the soul
• Purifying karma through tapas

Takeaway

A Chauvihar Upvas can be done for one day or longer, but longer fasts should be undertaken only with proper guidance, health awareness, and pure spiritual intention.