A person can never really complete a work like this alone. In order to write this book, I relied on the contributions of many other people. Many people helped me in the process of gaining knowledge and perception about mudras in general; and many others helped me with my research on the effects of working with mudras. There are many people I would like to thank for their help in this. Within a few months of beginning this project I “coincidentally” met people who were involved with the mudras either on a scientific and / or practical basis. They had been successfully using mudras for years and generously offered their knowledge for my use. In addition, some of my yoga students tested the mudras and confirmed the findings. From the bottom of my heart, I would like to thank those who helped me.
I sincerely thank Kim da Silva for permitting me to use some of his mudras, which have also helped me personally. Moreover, I would like to thank him for his suggestions and additions. Thanks as well to Elisabeth Steudler for her tips on herbs. Her knowledge, enthusiasm, and love of plants made my heart feel warm and wide.
I thank Ito Joyoatmojo, who drew more than 100 hands. The pictures of the hands on pages 38 and 39 are from G. Hürlimann's Handlesen (Wettsbilt). Many thanks also to Erika Schuler-Konietzny, for her help with my original manuscript.