My wife will be attending 21 days hata yoga program in isha coimbatore

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My wife will be attending the 21-day Hatha Yoga program at Isha Foundation in Coimbatore soon.

Wanted to hear from people who have attended (or whose family attended):

- What should she be prepared for physically and mentally?

- What are the biggest benefits/outcomes people usually see after the 21 days?

- Anything important to carry or avoid carrying?

- How strict is the schedule/food/sleep routine?

- Any tips for recovery, body soreness, or managing the intensity?

- Things family members should know while supporting them during the program?

- Any unexpected challenges or things you wish you knew before going?