Fasting is a vrat (discipline) in Jainism for self-purification and spiritual focus. There isn’t a single “one way fits all”—Jains observe several forms of fast, from light to strict, depending on tradition, personal resolve, and guidance from a guru or family.

Common forms you might hear about:

• Ekasana: eating just one meal in a day.
• Upvas: abstaining from food for a day, often with awareness and restraint.
• Nirjala/strict fast: no food (and sometimes no water) for a day or more.
• Partial or limited-fast: avoiding certain foods (like grains or certain spices) while still eating some light meals.

Notes:

• The exact rules can vary between Digambar and Shwetambar communities and even from family to family.
• The emphasis is on self-control, non-violence, and reflection (often with prayers or meditation).

If you share which Jain tradition you’re asking about (Digambar or Shwetambar) or how strict you’re thinking of being, I can give a more precise outline that fits that tradition. You can read more about Jain fasting practices on the Jain Knowledge site: