As an exponent of Indian dance, I have been taught hand mudras very systematically and thoroughly over a very long period of time, based on the ancient Indian text Natyasastra. Never have any of my masters mentioned the healing power of mudras (only once when my teacher told me not to cross my thumbs in Anjali because it would be bad for my heart). Mudras have become second nature to my movement, and I was sure they were great energy releases, but wanted more specific information. This book gives basic knowledge, which I appreciate, but not enough in-depth information. The author also mentions chakras, colors, etc. While my original review was a bit cynical, I've come back to this book again and again, and now am studying it seriously, and it has reconfirmed a lot of what I already knew, and has given me new insights as well, which has inspired me to come back to my review and change my original four star rating to five stars. It has initiated a quest for greater knowledge on the topic of healing mudra. I will seek out Keshev Das, one of Gertrud's techers, next time I am in India and thank her for stimulating my interest in a unique healing art.