Answer

In Jain practice, Chauvihar generally means not eating or drinking anything after sunset until the next morning.

During menstruation/periods, a woman may do Chauvihar if her health permits. However, Jain Dharma does not require anyone to harm the body or ignore genuine physical weakness.

Explanation

During periods, some women experience:

• Weakness
• Cramps
• Dizziness
• Heavy bleeding
• Need for medicine or warm water

If doing Chauvihar causes discomfort or health issues, it is better to follow a lighter discipline, such as:

• Tivihar — avoiding food after sunset but taking water if needed
• Taking medicine or water when medically necessary
• Doing mental bhakti, mantra-jap, pratikraman, or peaceful reflection instead

Spiritual Understanding

Jain Dharma values sanyam and tapasya, but it also teaches wisdom and awareness. A vow should be practiced with devotion, not with force or damage to health.

If the body is not supporting Chauvihar during periods, there is no spiritual benefit in pushing beyond safe limits.

Takeaway

During periods, Chauvihar is acceptable only if you feel physically well. If there is weakness, pain, heavy flow, or need for medicine/water, follow a gentler practice with a sincere and peaceful mind.