IYI meaning in Governmental ?

Yoga the Iyengar Way is a 1990 guide to Iyengar Yoga, a style of modern yoga as exercise, by the yoga teachers Silva Mehta and her children Mira Mehta and Shyam Mehta. They were among the first teachers to be trained by B. K. S. Iyengar outside India.

The main part of the book is on asanas, yoga postures. This is accompanied by an introduction to yoga, and sections on pranayama (yoga breathing), the philosophy of yoga, the surrender of the self including meditation, and recommended courses of asanas for different conditions. The book presents the asanas with a combination of a brief text and photographs of Mira and Shyam on a single page or a double-page spread.

The book has been well received by critics, who have called it "an influential classic textbook"; its publisher describes it as a "backlist bestseller". The authors have been portrayed in some of the asanas illustrated in the book in a set of Indian postage stamps.